Download - Karan Comp Programs for cbse class 12
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COMPUTER PROGRAMS
1.Write a program that accepts elements of a 4*4 array and displays it as 1 dimension array.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int A[4][4];
cout<<"Enter elements"<<endl;
for(int i=0;i<4;i++)
{
cout<<"Enter elements of row "<<i+1<<endl;
for(int j=0;j<4;j++)
{
cin>>A[i][j];
}
}
int B[16];
static int k=0;
for(i=0;i<4;i++)
{
for(int j=0;j<4;j++)
{
B[k]=A[j][i];
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k++;
}
}
cout<<"Array is-"<<endl;
for(i=0;i<16;i++)
cout<<B[i];
getch();
}
Output-
Enter elements of first row
1
2
3
4
Enter elements of second row
5
6
7
8
Enter elements of third row
9
10
11
12
Enter elements of fourth row
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13
14
15
16
Array is-15913261014371115481216
2.Write a program that accepts a three digit number and displays all possible permutations of its three digits.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int n;
cout<<"Enter 3 digit no"<<endl;
cin>>n;
int a=n/100;
n=n%100;
int b=n/10;
n=n%10;
int c=n;
cout<<"Numbers-"<<endl;
cout<<a<<b<<c<<endl;
cout<<a<<c<<b<<endl;
cout<<b<<a<<c<<endl;
cout<<b<<c<<a<<endl;
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cout<<c<<a<<b<<endl;
cout<<c<<b<<a<<endl;
getch();
}
Output-
Enter 3 digit no
123
Numbers-
123
132
213
231
312
321
3.Write a program that displays area of square, rectangle and triangle using values given by user beforehand.
#include<iostream.h>
#include<conio.h>
#include<math.h>
int area(int);
int area(int,int);
int area(int,int,int);
void main()
{
clrscr();
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int a=2,b=3,c=4;
cout<<"Area of square="<<area(a)<<endl;
cout<<"Area of rectangle="<<area(a,b)<<endl;
cout<<"Area of triangle="<<area(a,b,c)<<endl;
getch();
}
int area(int a)
{
return(a*a);
}
int area(int a,int b)
{
return(a*b);
}
int area(int a,int b,int c)
{
int s=(a+b+c)/2;
return(sqrt(s*(s-a)*(s-b)*s-c));
}
Output-
Area of square=4
Area of rectangle=6
Area of triangle=5
4.Write a program class account with subclasses savings and current.
#include<iostream.h>
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#include<conio.h>
#include<stdio.h>
#include<math.h>
class account
{
public:
char name[25];
int accno;
int opbal;
void read()
{
cout<<"Enter name of customer"<<endl;
gets(name);
cout<<"Enter account no"<<endl;
cin>>accno;
cout<<"Enter opening balance"<<endl;
cin>>opbal;
}
void dep()
{
int deposit;
cout<<"Enter money to be deposited"<<endl;
cin>>deposit;
opbal+=deposit;
}
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void disp()
{
cout<<"Name of customer-";
puts(name);
cout<<"Account number-"<<accno<<endl;
cout<<"Balance="<<opbal<<endl;
}
}acc;
class savings:public account
{
public:
int take;
void withdraw()
{
cout<<"Enter ammount you wish to withdraw"<<endl;
cin>>take;
opbal-=take;
}
void ci()
{
take=take*pow((1+0.04),3)-take;
cout<<"Customer must pay interest of "<<take<<endl;
}
}sav;
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class current:public account
{
public:
int check;
void checkbook()
{
cout<<"Enter ammount you wish to withdraw"<<endl;
cin>>check;
opbal-=check;
}
void minbal()
{
if(opbal<100)
cout<<"You must pay penalty of "<<(100-opbal)*0.04<<endl;
}
}cur;
void main()
{
clrscr();
int ch;
cout<<"Enter 1 for savings account, 2 for current account"<<endl;
cin>>ch;
if(ch==1)
{
cout<<"Enter customer details"<<endl;
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sav.read();
cout<<"Enter 1 to deposit, 2 to withdraw"<<endl;
cin>>ch;
if(ch==1)
sav.dep();
else
{
sav.withdraw();
}
cout<<"Details-"<<endl;
sav.disp();
if(ch==2)
sav.ci();
}
else
{
cout<<"Enter customer details"<<endl;
cur.read();
cout<<"Enter 1 to deposit and 2 to withdraw"<<endl;
cin>>ch;
if(ch==1)
cur.dep();
else
{
cur.checkbook();
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}
cout<<"Details-"<<endl;
cur.disp();
if(ch==2)
cur.minbal();
}
getch();
}
Output-
Enter 1 for savings account, 2 for current account
1
Enter customer details
Enter name of customer
Karan
Enter account no
123
Enter opening balance
1000
Enter 1 to deposit, 2 to withdraw
1
Enter money to be deposited
100
Details-
Name of customer-Karan
Account number-123
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Balance-1100
5.Write a program that accepts a number in decimal form and displays binary form of it.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int n;
int r=1;
cout<<"Enter decimal no"<<endl;
cin>>n;
while(n>0)
{
int d=n%2;
r=r*10+d;
n=n/2;
}
r=r/10;
cout<<"Binary="<<r;
getch();
}
Output-
Enter decimal no
2
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Binary=10
6.Write a program class bank with two subclasses book and audio cassette.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
class publication
{
public:
char title[25];
float price;
void getdata()
{
cout<<"Enter title"<<endl;
gets(title);
cout<<"Enter price"<<endl;
cin>>price;
}
void putdata()
{
cout<<"Title-";
puts(title);
cout<<"Price-"<<price<<endl;
}
}pub;
class book:public publication
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{
public:
publication cheat;
int count;
void getdata()
{
cout<<"Enter count"<<endl;
cin>>count;
}
void putdata()
{
cout<<"Count-"<<count<<endl;
}
}bo;
class audio:public publication
{
public:
publication cheat;
float tape;
void getdata()
{
cout<<"Enter running time of tape in mins"<<endl;
cin>>tape;
}
void putdata()
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{
cout<<"Time in minutes-"<<tape<<endl;
}
}aud;
void main()
{
clrscr();
pub.getdata();
bo.getdata();
aud.getdata();
pub.putdata();
bo.putdata();
aud.putdata();
getch();
}
Output-
Enter title
Computer Science
Enter price
200
Enter count
300
Enter running time of tape in minutes
50
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Title-Computer Science
Price-200
Count-300
Time in minutes-50
7.Write a program to accept radius of circle and display area and circumference.
#include<iostream.h>
#include<conio.h>
class circle
{
int r;
public:
float ar,ci;
void input(int radius)
{
r=radius;
}
void calc();
float area();
float circum();
};
void circle ::calc()
{
ar=3.14*r*r;
ci=2*3.14*r;
}
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float circle ::area()
{
return(ar);
}
float circle ::circum()
{
return(ci);
}
void main()
{
clrscr();
circle c;
int radius;
cout<<"Enter radius"<<endl;
cin>>radius;
c.input(radius);
c.calc();
cout<<"Area="<<c.area();
cout<<"Circumference="<<c.circum();
getch();
}
Output-
Enter radius
1
Area=3.14
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Circumference=6.28
8.Write a program class employee with subclass manager.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
class employee
{
public:
int empno;
char name[25];
char add[50];
char dept[25];
void input()
{
cout<<"Enter employee no"<<endl;
cin>>empno;
cout<<"Enter employee name"<<endl;
gets(name);
cout<<"Enter employee address"<<endl;
gets(add);
cout<<"Enter employee department"<<endl;
gets(dept);
}
void disp()
{
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cout<<"Employee number-"<<empno<<endl;
cout<<"Employee name-";
puts(name);
cout<<"Employee address-";
puts(add);
cout<<"Employee department-";
puts(dept);
}
}emp;
class manager:public employee
{
public:
int no;
void ino()
{
cout<<"Enter no of employees"<<endl;
cin>>no;
}
void ono()
{
cout<<"Number of employees-"<<no<<endl;
}
}man;
void main()
{
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clrscr();
man.input();
man.ino();
man.disp();
man.ono();
getch();
}
Output-
Enter employee number
1
Enter employee name
Karan
Enter employee address
Bangalore
Enter employee department
R&D
Enter no of employees
10
Employee number-1
Employee name-Karan
Employee address-Bangalore
Employee department-R&D
Number of employees-10
9.Write a program to demonstrate addition of data members of a class under different objects.
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#include<iostream.h>
#include<conio.h>
class distance
{
int feet,inches;
public:
void getdata(int f,int i)
{
feet=f;
inches=i;
}
void printit()
{
cout<<"Feet="<<feet<<endl;
cout<<"Inches="<<inches<<endl;
}
distance sum(distance d2);
};
distance distance ::sum(distance d2)
{
distance d3;
d3.feet=(feet+d2.feet)+(inches+d2.inches)/12;
d3.inches=(inches+d2.inches)%12;
return d3;
}
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void main()
{
clrscr();
distance l1,l2,total;
l1.getdata(17,6);
l2.getdata(13,8);
total=l1.sum(l2);
cout<<endl<<"Length 1-"<<endl;
l1.printit();
cout<<endl<<"Length 2-"<<endl;
l2.printit();
cout<<endl<<"Total-"<<endl;
total.printit();
cout<<endl;
getch();
}
Output-
Length 1-
Feet=17
Inches=6
Length 2-
Feet=13
Inches=8
Total-
Feet=31
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Inches=2
10.Write a c++ program to display fibbonaci series upto n terms.
#include<iostream.h>
#include<conio.h>
void fib(int,int,int);
void main()
{
clrscr();
int n;
int a=0,b=1;
cout<<"Enter n"<<endl;
cin>>n;
cout<<a<<","<<b;
fib(n,a,b);
getch();
}
void fib(int x,int a,int b)
{
int c=0;
static int d=2;
if(d<x)
{
c=a+b;
a=b;
b=c;
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cout<<","<<c;
d++;
fib(x,a,b);
}
}
Output-
Enter n
5
0,1,1,2,3
11.Write a program to accept two numbers and display their hcf.
#include<iostream.h>
#include<conio.h>
int a,b;
int hcf(int x)
{
if(a%x==0 && b%x==0)
return x;
else
return(hcf(x-1));
}
void main()
{
clrscr();
cout<<"Enter a and b"<<endl;
cin>>a>>b;
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cout<<”Hcf=”<<hcf(a);
getch();
}
Output-
Enter a and b
8
12
Hcf=4
12.Write a program to find hcf and gcd of two numbers.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a,b;
int hcf,lcm;
cout<<"Enter 2 numbers"<<endl;
cin>>a>>b;
for(int i=1;i<=a;i++)
{
if(a%i==0 && b%i==0)
hcf=i;
}
for(int j=a;j<=a*b;j++)
{
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if(j%a==0 && j%b==0)
{
lcm=j;
break;
}
}
cout<<"HCF="<<hcf<<endl;
cout<<"LCM="<<lcm;
getch();
}
Output-
Enter 2 numbers
8
12
HCF=4
LCM=24
13.Write a program to accept a string and display number of characters in it.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
char str[100];
cout<<"Enter string"<<endl;
cin.getline(str,100);
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for(int i=0;i<100;i++)
{
if(str[i]=='\0')
break;
}
cout<<"No of characters="<<i<<endl;
getch();
}
Output-
Enter string
Computers
No of characters=9
14.Write a program to display following pattern-
1
2 3
4 5 6
7 8 9 10
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int s=0;
for(int i=1;i<=5;i++)
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{
for(int k=4;k>=i;k--)
cout<<" ";
for(int j=1;j<i;j++)
{
s++;
cout<<s<<" ";
}
cout<<endl;
}
getch();
}
Output-
1
2 3
4 5 6
7 8 9 10
15.Write a program class person with subclass spouse.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
class person
{
public:
char name[25];
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int phone;
person()
{
phone=1234;
}
void get()
{
cout<<"Enter person name"<<endl;
gets(name);
cout<<"Enter phone no"<<endl;
cin>>phone;
}
void disp()
{
cout<<"Person name-";
puts(name);
cout<<"Phone no-"<<phone<<endl;
}
};
class spouse:public person
{
public:
char spousename[25];
void getsp()
{
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cout<<"Enter spouse name"<<endl;
gets(spousename);
}
void disps()
{
cout<<"Person name-";
puts(name);
cout<<"Phone number-"<<phone<<endl;
cout<<"Spouse name-";
puts(spousename);
}
}s;
void main()
{
clrscr();
cout<<"Enter data for person"<<endl;
s.get();
s.disp();
cout<<"Enter spouse data"<<endl;
s.getsp();
s.disps();
getch();
}
Output-
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Enter data of person
Enter person name
Amit
Enter phone no
1234
Person name-Amit
Phone no-1234
Enter spouse data
Enter spouse name
Aditi
Person name-Amit
Phone no-1234
Spouse name-Aditi
16.Write a program to accept a number and display prime numbers up to it.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int n,c;
cout<<"Enter n greater than 5"<<endl;
cin>>n;
while(n<=5)
{
cout<<"Greater than 5"<<endl;
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cin>>n;
}
for(int i=2;i<=n;i++)
{
c=0;
for(int j=1;j<=i;j++)
{
if(i%j==0)
c++;
}
if(c==2)
cout<<i<<endl;
}
getch();
}
Output-
Enter n greater than 5
6
2
3
5
17.Write a program to display following series-
s=1 + 1/2! + 1/3!...+1/n!
#include<iostream.h>
#include<conio.h>
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void main()
{
clrscr();
int n;
double s=1,t=1;
cout<<"Enter n"<<endl;
cin>>n;
for(int i=1;i<=n;i++)
{
t*=i;
s+=1/t;
}
cout<<"Sum="<<s;
getch();
}
Output-
Enter n
2
Sum=2.5
18.Write a program to demonstrate how the compiler handles functions with same name but different parameters.
#include<iostream.h>
#include<conio.h>
double si(int p,int t,int r=3);
void main()
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{
clrscr();
int p=1000,r=4,t=2;
cout<<endl<<"Simple interest="<<si(p,t,r)<<endl;
cout<<"Default simple interest="<<si(p,t)<<endl;
getch();
}
double si(int p,int t,int r)
{
return((p*t*r)/100);
}
Output-
Simple interest=80
Default simple interest=60
19.Write a program to accept student details and display them.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
class student
{
public:
char name[25];
int age;
void readdata()
{
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cout<<"Enter name"<<endl;
gets(name);
cout<<"Enter age"<<endl;
cin>>age;
}
void display()
{
cout<<"Name of student-";
puts(name);
cout<<"Age-"<<age<<endl;
}
};
class primarystudent:public student
{
public:
char activity[25];
int nohrs;
void readprimary()
{
cout<<"Enter activity"<<endl;
gets(activity);
cout<<"Enter number of hours spent in activity"<<endl;
cin>>nohrs;
}
void displayprimary()
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{
cout<<"Activity-";
puts(activity);
cout<<"Number of hours spent-"<<nohrs<<endl;
}
}prime;
class secondarystudent:public student
{
public:
char combo[25];
void readsecondary()
{
cout<<"Enter combination of student"<<endl;
gets(combo);
}
void displaysecondary()
{
cout<<"Combination of student-";
puts(combo);
}
}sec;
class equipment:public secondarystudent
{
public:
char namee[25];
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int roll;
void readequip()
{
cout<<"Enter name of equipment"<<endl;
gets(namee);
cout<<"Enter roll no of equipment"<<endl;
cin>>roll;
}
void displayequip()
{
cout<<"Name of equipment-";
puts(namee);
cout<<"Roll no-"<<roll<<endl;
}
}equip;
class book:public student
{
public:
char bookname[25];
int nopgs;
char author[25];
void readb()
{
cout<<"Enter name of book"<<endl;
gets(bookname);
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cout<<"Enter number of pages"<<endl;
cin>>nopgs;
cout<<"Enter author name"<<endl;
gets(author);
}
void displayb()
{
cout<<"Name of book-";
puts(bookname);
cout<<"Number of pages-"<<nopgs<<endl;
cout<<"Author-";
puts(author);
}
}bo;
void main()
{
clrscr();
int ch;
cout<<"Enter book details"<<endl;
bo.readb();
cout<<"Enter 1 if primary student, 2 if secondary"<<endl;
cin>>ch;
if(ch==1)
{
cout<<"Enter basic details"<<endl;
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prime.readdata();
cout<<"Enter specific details"<<endl;
prime.readprimary();
cout<<"Book details-"<<endl;
bo.displayb();
cout<<"Student details-"<<endl;
prime.display();
prime.displayprimary();
}
else
{
cout<<"Enter basic details"<<endl;
equip.readdata();
cout<<"Enter specific details"<<endl;
equip.readsecondary();
cout<<"Enter equipment details"<<endl;
equip.readequip();
cout<<"Book details-"<<endl;
bo.displayb();
cout<<"Student details-"<<endl;
equip.display();
equip.displaysecondary();
cout<<"Equipment details"<<endl;
equip.displayequip();
}
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getch();
}
Output-
Enter book details
Enter name of book
Computer Science
Enter number of pages
200
Enter author name
Sumita Arora
Enter 1 if primary student,2 if secondary
1
Enter basic details
Enter name
Amit
Enter age
9
Enter specific details
Enter activity
Football
Enter number of hours spent in activity
3
Book details-
Name of book-Computer Science
Number of pages-200
![Page 40: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/40.jpg)
Author-Sumita Arora
Student details-
Name of student-Amit
Age-9
Activity-Football
Number of hours spent-3
20.Write a program to accept two numbers and swap them.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a,b;
cout<<"Enter numbers to be swapped"<<endl;
cin>>a>>b;
cout<<"Original numbers"<<a<<","<<b<<endl;
a=a+b;
b=a-b;
a=a-b;
cout<<"Swapped numbers="<<a<<","<<b<<endl;
getch();
}
Output-
Enter numbers to be swapped
2
![Page 41: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/41.jpg)
3
Original numbers-2,3
Swapped numbers-3,2
21.Write a program that accepts date, month and year, and checks if it is a valid date.
#include<iostream.h>
#include<conio.h>
#include<ctype.h>
void date(int,int,int);
void main()
{
clrscr();
int day,month,year;
char c;
cout<<"Enter day"<<endl;
cin>>day;
cout<<"Enter month"<<endl;
cin>>month;
cout<<"Enter year"<<endl;
cin>>year;
date(day,month,year);
getch();
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}
void date(int d,int m,int y)
{
int val=1;
int type=0;
int thirty[]={4,6,9,11,0,0,0};
int thirone[]={1,3,5,7,8,10,12};
int feb[]={2,0,0,0,0,0,0};
int t1=0,t2=0,t3=0;
if(m>12)
val=0;
if(d==0)
val=0;
for(int i=0;i<7;i++)
{
if(thirty[i]==m)
t1=1;
if(thirone[i]==m)
t2=1;
if(feb[i]==m)
t3=1;
}
if(t1==1)
{
if(d>30)
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val=0;
}
else if(t2==1)
{
if(d>31)
val=0;
}
else
{
if(d>28 && y%4!=0)
val=0;
else if(d>29 && y%4==0)
val=0;
}
if(val==1)
cout<<"Date is valid"<<endl;
else
cout<<"Date is invalid"<<endl;
if(y%4==0)
cout<<"Leap year"<<endl;
else
cout<<"Not leap year"<<endl;
}
Output-
Enter day
![Page 44: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/44.jpg)
15
Enter month
6
Enter year
2014
Date is valid
Not a leap year
22.Write a program to demonstrate function overloading.
#include<iostream.h>
#include<conio.h>
#include<math.h>
int vol(int);
int vol(int,int);
int vol(int,int,int);
void main()
{
clrscr();
int s=2,r=3,h=4;
cout<<"Volume of cube="<<vol(s)<<endl;
cout<<"Volume of cylinder="<<vol(r,h)<<endl;
cout<<"Volume of cuboid="<<vol(s,r,h)<<endl;
getch();
}
int vol(int s)
{
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return(s*s*s);
}
int vol(int r,int h)
{
return(3.14*r*r*h);
}
int vol(int s,int r,int h)
{
return(s*r*h);
}
Output-
Volume of cube=8
Volume of cylinder=113
Volume of cuboid=24
23.Write a program to accept worker details and display them along with monthly salary.
#include<iostream.h>
#include<conio.h>
class worker
{
char wname[25];
float hrwrk,wgrate;
float totalwage;
float calcwage();
public:
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void in_data();
void out_data();
}wor;
float worker ::calcwage()
{
return(hrwrk*wgrate);
}
void worker ::in_data()
{
cout<<"Enter name of worker"<<endl;
cin>>wname;
cout<<"Enter hours worked"<<endl;
cin>>hrwrk;
cout<<"Enter hourly wage"<<endl;
cin>>wgrate;
totalwage=calcwage();
}
void worker ::out_data()
{
cout<<"Name of worker-"<<wname<<endl;
cout<<"Hours worked-"<<hrwrk<<endl;
cout<<"Hourly wage-"<<wgrate<<endl;
cout<<"Total wage-"<<totalwage<<endl;
}
void main()
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{
clrscr();
wor.in_data();
wor.out_data();
getch();
}
Output-
Enter name of worker
Karan
Enter hours worked
24
Enter hourly wage
0
Name of worker-Karan
Hours worked-24
Hourly wage-0
Total wage-0
24.Write a program that accepts two numbers, sets the smaller as 0 and displays them.
#include<iostream.h>
#include<conio.h>
void zerosmall(int &,int &);
void main()
{
clrscr();
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int a,b;
cout<<"Enter 2 numbers"<<endl;
cin>>a>>b;
zerosmall(a,b);
cout<<"The 2 numbers are-"<<a<<","<<b<<endl;
getch();
}
void zerosmall(int &a,int &b)
{
if(a<b)
a=0;
else
if(a>b)
b=0;
else
{}
}
Output-
Enter 2 numbers
2
3
The 2 numbers are-0,3
25.RECORD:Write a function program with sum() as function with 2 arguments-
double x and int n.The function should return a value of type
double and find sum of the following series-
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1 + x/1! + x^3/2! +x^5/3!...+x^2n-1/n!
#include<iostream.h>
#include<conio.h>
double sum(double,int);
void main()
{
clrscr();
double x;
int n;
cout<<"Enter x and n"<<endl;
cin>>x>>n;
cout<<"Sum of series="<<sum(x,n)<<endl;
getch();
}
double sum(double x,int n)
{
double sum=1,temp=1/x;
for(int i=1;i<=n;i++)
{
temp*=x*x/i;
sum+=temp;
}
return(sum);
}
Output-
![Page 50: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/50.jpg)
Enter x and n
2
3
Sum of series=12.333333
26.RECORD:Declare a structure to represent a complex number having real
and imaginary parts. Write functions to add, subtract, multiply
and divide the two complex numbers.
#include<iostream.h>
#include<conio.h>
struct complex
{
double r,i;
}n1,n2,n3;
void add()
{
n3.r=n1.r+n2.r;
n3.i=n1.i+n2.i;
}
void sub()
{
n3.r=n1.r-n2.r;
n3.i=n1.i-n2.i;
}
void mul()
{
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n3.r=(n1.r*n2.r)-(n1.i*n2.i);
n3.i=(n1.r*n2.i)+(n1.i*n2.r);
}
void div()
{
n2.i*=-1;
n3.r=(n1.r*n2.r)-(n1.i*n2.i);
n3.i=(n1.r*n2.i)+(n1.i*n2.r);
double den=(n2.r*n2.r)+(n2.i*n2.i);
n3.r/=den;
n3.i/=den;
}
void main()
{
clrscr();
char ch;
int real,imag;
cout<<"Enter real and complex part of first number"<<endl;
cin>>n1.r>>n1.i;
cout<<"Enter real and complex part of second number"<<endl;
cin>>n2.r>>n2.i;
cout<<"Enter + for addition, - for subtraction, * for multiplication, / for division"<<endl;
cin>>ch;
switch(ch)
{
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case '+':cout<<"Addition"<<endl;
add();
break;
case '-':cout<<"Subtraction"<<endl;
sub();
break;
case '*':cout<<"Multiplication"<<endl;
mul();
break;
case '/':cout<<"Division"<<endl;
div();
break;
default:cout<<"Invalid input"<<endl;
n3.r=0,n3.i=0;
}
if(n3.i>0)
cout<<"Number="<<n3.r<<"+"<<n3.i<<"i";
else
cout<<"Number="<<n3.r<<n3.i<<"i";
getch();
}
Output-
Enter real and complex part of first number
1
2
![Page 53: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/53.jpg)
Enter real and imaginary part for second number
3
4
Enter + for addition, - for subtraction, * for multiplication, / for division
+
Addition
Number=4+6i
27.RECORD:From a 2D array A[4][4] write a program to prepare
a 1D array B[16] that will have all the elements of A
if they are stored in column major form.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int A[4][4],B[16];
for(int i=0;i<4;i++)
{
cout<<"Enter elements of row no."<<i+1<<endl;
for(int j=0;j<4;j++)
{
cin>>A[i][j];
}
}
int k=0;
![Page 54: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/54.jpg)
for(i=0;i<4;i++)
{
for(int j=0;j<4;j++)
{
B[k]=A[j][i];
k++;
}
}
cout<<"Single dimension array is-"<<endl;
for(i=0;i<16;i++)
cout<<B[i]<<",";
getch();
}
Output-
Enter elements of first row
1
2
3
4
Enter elements of second row
5
6
7
8
Enter elements of third row
![Page 55: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/55.jpg)
9
10
11
12
Enter elements of fourth row
13
14
15
16
Array is-1,5,9,13,2,6,10,14,3,7,11,15,4,8,12,16
28.RECORD:Write two overloaded functions to find GCD of two numbers amongst
which one function would be normal, other recursive.
#include<iostream.h>
#include<conio.h>
int gcd(int a,int b);
int gcd(int n);
int c,d;
void main()
{
clrscr();
int a,b;
int ch;
cout<<"Enter the two numbers"<<endl;
cin>>a>>b;
![Page 56: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/56.jpg)
cout<<"Enter 1 for normal function, 2 for recursive function"<<endl;
cin>>ch;
if(ch==1)
cout<<"GCD="<<gcd(a,b);
else if(ch==2)
{
c=a,d=b;
cout<<"GCD="<<gcd(a);
}
else
cout<<"Invalid input"<<endl;
getch();
}
int gcd(int a,int b)
{
int g=0;
for(int i=1;i<=a;i++)
{
if(a%i==0 && b%i==0)
g=i;
}
return(g);
}
int gcd(int n)
{
![Page 57: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/57.jpg)
if(n==1)
return 1;
else if(c%n==0 && d%n==0)
return n;
else
return(gcd(n-1));
}
Output-
Enter the 2 numbers
8
12
Enter 1 for normal function, 2 for recursive
1
GCD=4
29.RECORD:Write an overloaded function power() having two versions. The first
version takes double n and int p and returns a double value. The
second takes int n and int p and returns int value. Use a default value
2 for p in case p is omitted in function call.
#include<iostream.h>
#include<conio.h>
#include<math.h>
double power(double,int p=2);
int power(int,int p=2);
void main()
{
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clrscr();
double n;
int p;
int c,ch;
cout<<"Enter n"<<endl;
cin>>n;
cout<<"Enter 1 if you wish to enter p"<<endl;
cin>>c;
if(c==1)
{
cout<<"Enter p"<<endl;
cin>>p;
}
cout<<"Enter 1 for n^p, 2 for n*n*n....p times"<<endl;
cin>>ch;
if(c==1 && ch==1)
cout<<"Result="<<power(n,p);
else if(c!=1 && ch==1)
cout<<"Result="<<power(n);
else if(c==1 && ch==2)
{
n=(int)n;
cout<<"Result="<<power(n,p);
}
else if(c!=1 && ch==2)
![Page 59: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/59.jpg)
{
n=(int)n;
cout<<"Result="<<power(n);
}
else
cout<<"Invalid choice"<<endl;
getch();
}
double power(double n,int p)
{
double temp=pow(n,p);
return temp;
}
int power(int n,int p)
{
int temp=1;
for(int i=1;i<=p;i++)
{
temp*=n;
}
return temp;
}
Output-
Enter n
2
![Page 60: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/60.jpg)
Enter 1 if you wish to enter p
0
Enter 1 for n^p, 2 for n*n*n...p times
2
Result=4
30.RECORD:Write two versions of an overloaded function sum(). The first version
accepts and int array and returns sum of all elements. The second
version accepts an int array and a character. It returns sum of even
elements if character is 'E', sum of odd elements if character is 'O',
and 0 if any other character.
#include<iostream.h>
#include<conio.h>
int sum(int ar[5]);
int sum(int ar[5],char);
void main()
{
clrscr();
int ar[5];
char ch;
cout<<"Enter 5 elements for the array"<<endl;
for(int i=0;i<5;i++)
cin>>ar[i];
cout<<"Enter 1 for sum of even or odd elements"<<endl;
cin>>ch;
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if(ch=='1')
{
cout<<"Enter E for even, O for odd"<<endl;
cin>>ch;
cout<<"Sum="<<sum(ar,ch);
}
else
cout<<"Sum="<<sum(ar);
getch();
}
int sum(int ar[5])
{
int s=0;
for(int i=0;i<5;i++)
{
s+=ar[i];
}
return s;
}
int sum(int ar[5],char ch)
{
int e=0,o=0;
for(int i=0;i<5;i++)
{
if(ar[i]%2==0)
![Page 62: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/62.jpg)
e+=ar[i];
else
o+=ar[i];
}
if(ch=='E')
return e;
else if(ch=='O')
return o;
else
return 0;
}
Output-
Enter 5 elements for the array
1
2
3
4
5
Enter 1 for sum of even or odd elements
0
Sum=15
31.RECORD:Write a program to keep count of objects created using static members.
#include<iostream.h>
#include<conio.h>
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class counter
{
static int c;
public:
counter()
{
c++;
}
void display()
{
cout<<"Number of objects created="<<c<<endl;
}
};
int counter ::c=0;
void main()
{
clrscr();
char ch;
cout<<"Enter 1,2,3 to create 1,2,3 objects respectively"<<endl;
cin>>ch;
if(ch=='1')
{
counter A;
cout<<"Object called A created"<<endl;
A.display();
![Page 64: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/64.jpg)
}
else if(ch=='2')
{
counter B;
counter C;
cout<<"Objects called B and C created"<<endl;
C.display();
}
else if(ch=='3')
{
counter D;
counter E;
counter F;
cout<<"Objects called D,E,F created"<<endl;
F.display();
}
else
cout<<"Invalid input"<<endl;
getch();
}
Output-
Enter 1,2,3 to create 1,2,3 objects respectively
1
Object called A created
Number of objects created=1
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32.RECORD:Write a program to perform various operations on a string class without
using language supported biult-in string functions. Operations are read
a string, display, reverse, copy to empty, concatenate.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
class string
{
char str[25],str2[25],r[25],cop[25],con[50];
public:
read();
disp();
rev();
copy();
concat();
}s;
string ::read()
{
cout<<"Enter string"<<endl;
gets(str);
}
string ::disp()
{
cout<<"String=";
![Page 66: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/66.jpg)
puts(str);
cout<<endl;
}
string ::rev()
{
for(int i=0;str[i]!='\0';i++);
for(int k=0,j=i-1;j>=0;j--,k++)
{
r[k]=str[j];
}
cout<<"Reversed string=";
puts(r);
}
string ::copy()
{
for(int i=0;i<25;i++)
cop[i]=str[i];
cout<<"Copied string=";
puts(cop);
cout<<endl;
}
string ::concat()
{
cout<<"Enter second string"<<endl;
gets(str2);
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for(int i=0;str[i]!='\0';i++);
for(int j=0;str2[j]!='\0';j++);
for(int k=0;k<i;k++)
con[k]=str[k];
for(int l=0;l<j;l++)
con[l+i]=str[l];
cout<<"Concatenated strings=";
puts(cop);
}
void main()
{
clrscr();
s.read();
s.disp();
s.rev();
s.copy();
s.concat();
getch();
}
Output-
Enter string
Computer
String=Computer
Reversed string=retupmoC
Copied string=Computer
![Page 68: Karan Comp Programs for cbse class 12](https://reader035.vdocument.in/reader035/viewer/2022062411/577cc7451a28aba711a07cb9/html5/thumbnails/68.jpg)
Enter second string
Science
Concatenated strings=ComputerScience
33.RECORD:Define a class Applicant that accepts admission no, name, aggregate
marks, calculates grade and displays all the details.
#include<iostream.h>
#include<conio.h>
class Applicant
{
long int ANo;
char Name[25];
float Agg;
char Grade;
void GradeMe()
{
if(Agg>=80)
Grade='A';
else if(Agg<80 && Agg>=65)
Grade='B';
else if(Agg<65 && Agg>=50)
Grade='C';
else
Grade='D';
}
public:
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void ENTER()
{
cout<<"Enter Admission number"<<endl;
cin>>ANo;
cout<<"Enter name"<<endl;
cin>>Name;
cout<<"Enter Aggregate marks"<<endl;
cin>>Agg;
GradeMe();
}
void RESULT()
{
cout<<"Admission number="<<ANo<<endl;
cout<<"Name="<<Name<<endl;
cout<<"Aggregate marks="<<Agg<<endl;
cout<<"Grade="<<Grade<<endl;
}
}A;
void main()
{
clrscr();
A.ENTER();
A.RESULT();
getch();
}
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Output-
Enter Admission number
1
Enter name
Karan
Enter Aggregate marks
100
Admission number=1
Name=Karan
Aggregate marks=100
Grade=A
34.RECORD:Define a class ticbooth which counts number of people who pass by and
whether they buy a ticket or not, and displays all the details.
#include<iostream.h>
#include<conio.h>
class ticbooth
{
int totp;
double totm;
public:
ticbooth()
{
totp=0,totm=0;
}
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void incp()
{
totp++;
}
void incm()
{
totm=totm+2.5;
}
void display()
{
cout<<"Number of people who visited="<<totp<<endl;
cout<<"Amount collected="<<totm<<endl;
}
void ticket()
{
cout<<"Tickets sold="<<totm/2.5<<endl;
}
}t;
void main()
{
clrscr();
cout<<"Ticket booth"<<endl;
char ch='0',buy;
while(ch=='0')
{
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cout<<"A person passes by"<<endl;
cout<<"Enter 1 if he buys a ticket"<<endl;
cin>>buy;
if(buy=='1')
{
t.incp();
t.incm();
}
else
t.incp();
cout<<"Enter 0 to continue"<<endl;
cin>>ch;
}
t.display();
t.ticket();
getch();
}
Output-
Ticket booth
A person passes by
Enter 1 if he buys a ticket
1
Enter 0 to continue
0
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A person passes by
Enter 1 if he buys a ticket
0
Enter 0 to continue
1
Number of people who visited=2
Amount collected=2.5
Tickets sold=1
35.RECORD:Define a class TravelPlan, use constructor to initialise plan code,
place, number of travellers and number of buses. Allow user to enter the
values, calculate number of buses needed and display the information.
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<string.h>
class TravelPlan
{
long int PlanCode;
char Place[25];
int Number_of_travellers;
int Number_of_buses;
public:
TravelPlan()
{
PlanCode=1001;
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strcpy(Place,"Agra");
Number_of_travellers=5;
Number_of_buses=1;
}
void NewPlan()
{
cout<<"Enter plan code"<<endl;
cin>>PlanCode;
cout<<"Enter place"<<endl;
gets(Place);
cout<<"Enter number of travellers"<<endl;
cin>>Number_of_travellers;
if(Number_of_travellers<20)
Number_of_buses=1;
else if(Number_of_travellers>=20 && Number_of_travellers<40)
Number_of_buses=2;
else
Number_of_buses=3;
}
void ShowPlan()
{
cout<<"Plan code="<<PlanCode<<endl;
cout<<"Place=";
puts(Place);
cout<<"Number of travellers="<<Number_of_travellers<<endl;
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cout<<"Number of buses="<<Number_of_buses<<endl;
}
}tp;
void main()
{
clrscr();
tp.NewPlan();
tp.ShowPlan();
getch();
}
Output-
Enter plan code
1
Enter place
Bangalore
Enter number of travellers
10
Plan code=1
Place=Bangalore
Number of travellers=10
Numbers of buses=1
36.RECORD:Define a class Serial with information like serial code, title, duration
and no of episodes. Initialise using constructors and member functions
and then display.
#include<iostream.h>
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#include<conio.h>
#include<stdio.h>
class Serial
{
int Serialcode;
char Title[20];
float Duration;
int Noofepisodes;
public:
Serial()
{
Duration=30;
Noofepisodes=10;
}
void Newserial()
{
cout<<"Enter serial code"<<endl;
cin>>Serialcode;
cout<<"Enter title"<<endl;
gets(Title);
}
void Otherentries(float d,int n)
{
Duration=d;
Noofepisodes=n;
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}
Dispdata()
{
cout<<"Serial code="<<Serialcode<<endl;
cout<<"Title=";
puts(Title);
cout<<"Duration="<<Duration<<endl;
cout<<"No of episodes="<<Noofepisodes<<endl;
}
}s;
void main()
{
clrscr();
float d;
int n;
s.Newserial();
cout<<"Enter duration and no of episodes"<<endl;
cin>>d>>n;
s.Otherentries(d,n);
s.Dispdata();
getch();
}
Output-
Enter serial code
1
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Enter title
Tom and Jerry
Enter duration and no of episodes
30
100
Serial code=1
Title=Tom and Jerry
Duration=30
No of episodes=100
37.RECORD:Define a class Clothing to accept code, type, size and material, calculate
price and display.
#include<iostream.h>
#include<conio.h>
#include<string.h>
#include<stdio.h>
class Clothing
{
char Code[25],Type[25];
int Size;
char Material[25];
float Price;
Calc_Price()
{
if(!strcmp(Material,"COTTON"))
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{
if(!strcmp(Type,"TROUSER"))
Price=1500;
else if(!strcmp(Type,"SHIRT"))
Price=1200;
else
{}
}
else
{
if(!strcmp(Type,"TROUSER"))
Price=1500-1500*0.25;
else if(!strcmp(Type,"SHIRT"))
Price=1200-1200*0.25;
else
{}
}
}
public:
Clothing()
{
strcpy(Code,"NOT ASSIGNED");
strcpy(Type,"NOT ASSIGNED");
strcpy(Material,"NOT ASSIGNED");
Size=0;
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Price=0;
}
void Enter()
{
cout<<"Enter code, type, size, material"<<endl;
gets(Code);
gets(Type);
cin>>Size;
gets(Material);
Calc_Price();
}
void Show()
{
cout<<"Code=";
puts(Code);
cout<<"Type=";
puts(Type);
cout<<"Size="<<Size<<endl;
cout<<"Material=";
puts(Material);
cout<<"Price="<<Price<<endl;
}
}c;
void main()
{
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clrscr();
c.Enter();
c.Show();
getch();
}
Output-
Enter code, type, size, material
1
SHIRT
42
COTTON
Code=1
Type=SHIRTSize=42
Material=COTTON
Price=1200
38.RECORD:Write a function to accept time of 2 clocks in hours, minutes, seconds
and output time since last struck 12 in seconds and difference between
the two in seconds.
#include<iostream.h>
#include<conio.h>
#include<math.h>
void time(int h1,int m1,int s1,int h2,int m2,int s2);
void main()
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{
clrscr();
int h1,m1,s1,h2,m2,s2;
cout<<"Enter first clock's time in hours, minutes,seconds"<<endl;
cin>>h1>>m1>>s1;
cout<<"Enter second clock's time in hours, minutes, seconds"<<endl;
cin>>h2>>m2>>s2;
time(h1,m1,s1,h2,m2,s2);
getch();
}
void time(int h1,int m1,int s1,int h2,int m2,int s2)
{
int t1=h1*3600+m1*60+s1;
int t2=h2*3600+m2*60+s2;
cout<<"Seconds since first clock struck 12="<<t1<<endl;
cout<<"Seconds since second clock struck 12="<<t2<<endl;
int t3=(fabs)(t1-t2);
cout<<"Difference between 2 clocks in seconds="<<t3<<endl;
}
Output-
Enter first clock's time in hours, minutes, seconds
1
10
20
Enter second clocks' time in hours, minutes, seconds
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3
20
4
Seconds since first clock struck 12=4220
Seconds since second clock struck 12=12004
Difference between two clocks in seconds=7784