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C++ PRACTICAL FILE

Q1. (a) Program to display the following using single coutMATHS=90PHYSICS=77CHEMISTRY=69Solution code//Program to display the program using single cout#include<iostream.h>#include<conio.h>void main(){clrscr();cout<<"Maths=90\nPhysics=77\nChemistry=69";getch();}Output

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C++ PRACTICAL FILE

Q1. (b) Program to display the following using multiple coutMATHS=90PHYSICS=77CHEMISTRY=69Solution code//Program to display the program using single cout#include<iostream.h>#include<conio.h>void main(){clrscr();cout<<"Maths=90";cout<<"\nPhysics=77";cout<<"\nChemistry=69";getch();}Output


C++ PRACTICAL FILE

Q13. Program to find that entered year is leap year or notSolution Code//Program to find entered year is leap or not#include<iostream.h>#include<conio.h>void main(){clrscr();int year;cout<<"Enter the year\n";cin>>year;if(year%4==0){cout<<"Entered year is a leap year\n";}else{cout<<"Entered year is not a leap year";}getch();}Output


C++ PRACTICAL FILE

Q14. Program to solve quadratic equation ax2+bx+c=0Solution Code//Program to solve quadratic equation#include<iostream.h>#include<conio.h>#include<math.h>void main(){clrscr();float a,b,c,d,r1,r2;cout<<"Enter the value of a,b,c\n";cin>>a>>b>>c;if(a==0){cout<<"cannot be solve";}else{d=(b*b)-(4*a*c);if(d>0){r1=(-b+sqrt(d))/(2*a);


C++ PRACTICAL FILE

r2=(-b-sqrt(d))/(2*a);cout<<"Roots are equal and different\nroot1="<<r1<<"\nroot2="<<r2;}else if(d==0){r1=r2=-b/(2*a);cout<<"Roots are real but same\nroot1=root2="<<r1;}else{cout<<"Roots are imaginary";}}getch();}Output


C++ PRACTICAL FILE

Q15. Program to find whether given number is even or oddSolution Code//Program to check number is even or odd#include<iostream.h>#include<conio.h>void main(){clrscr();int num,res;cout<<"Enter the number\n";cin>>num;res=num%2;switch(res){case 0:cout<<"Number is even";break;case 1:cout<<"Number is odd";break;default:cout<<"Invalid entry";


C++ PRACTICAL FILE

}getch();}

Output


C++ PRACTICAL FILE

Q17. Program to display arithmetic operations using switch caseSolution Code//Program for arithmetic operators using switch#include<iostream.h>#include<conio.h>void main(){clrscr();int a,b,res;char ch;cout<<"Enter the two numbers\n";cin>>a>>b;cout<<"Enter the operation to perform +,-,*,/,%\n";cin>>ch;switch(ch){case '+':res=a+b;cout<<res;break;case '-':res=a-b;


C++ PRACTICAL FILE

cout<<res;break;case '*':res=a*b;cout<<res;break;case '/':res=a/b;cout<<res;break;case '%':res=a%b;cout<<res;break;default:cout<<"Wrong choice";}getch();}Output


C++ PRACTICAL FILE

Q18. To display first 10 natural no and their sumSolution code//Program to display first 10 natural numbers and their sum#include<iostream.h>#include<conio.h>void main(){clrscr();int sum=0;cout<<"First 10 natural number are\n";for(int i=1;i<=10;++i){cout<<i<<"\n";sum=sum+i;}cout<<"Sum is"<<sum;getch();}Output


C++ PRACTICAL FILE

Q19. Program to display the fibonacci seriesSolution code//Program to display the fibonacci series#include<iostream.h>#include<conio.h>void main(){clrscr();int a=0,b=1,sum=0,limit;cout<<"Enter the limit";cin>>limit;cout<<a<<"\n"<<b<<"\n";for(int i=0;i<=limit-2;++i){sum=a+b;cout<<sum<<"\n";a=b;b=sum;}


C++ PRACTICAL FILE

getch();}

Output


C++ PRACTICAL FILE

Q20. Program to find the factorial of a numberSolution code//Program to display the factorial of a number#include<iostream.h>#include<conio.h>void main(){clrscr();int a,fact=1;cout<<"Enter the value of a";cin>>a;for(int i=1;i<=a;++i){fact=fact*i;}cout<<"The factorial of numberis"<<fact;getch();}


C++ PRACTICAL FILE

Output

Q21. Program to find whether given number is prime or notSolution Code//Program to check number is prime or not#include<iostream.h>#include<conio.h>void main(){clrscr();int num,temp=0;cout<<"Enter the number\n";cin>>num;for(int i=2;i<=num-1;++i){if(num%i==0){temp=1;break;


C++ PRACTICAL FILE

}}if(temp==0){cout<<"Prime Number";}else{cout<<"Not a prime number";}getch();}Output


C++ PRACTICAL FILE

Q21. (a) Program to find the sum of the series 1+2+3….nSolution Code//Program to find the sum of 1+2+3+..+n#include<iostream.h>#include<conio.h>void main(){clrscr();int limit,sum=0;cout<<"Enter the limit\n";cin>>limit;for(int i=1;i<=limit;++i){sum=sum+i;}cout<<"Answer is"<<sum;getch();


C++ PRACTICAL FILE

}Output

Q21. (b) Program to find the sum of the series 1+1/1!+2/2!+3/3!....n/n!.Solution Code//Program to solve the series 1+1/1!+2/2!+3/3!+..+n/n!#include<iostream.h>#include<conio.h>void main(){clrscr();float limit,fact=1,sum=1;cout<<"Enter the limit\n";cin>>limit;for(int i=1;i<=limit;++i){for(int j=1;j<=limit;++j){fact=fact*i;


C++ PRACTICAL FILE

}sum=sum+i/fact;fact=1;}cout<<"Sum of the series is"<<sum;getch();}

Output


C++ PRACTICAL FILE

Q22. (a) Program to generate the following pattern * ** ***…

Solution Code#include<iostream.h>#include<conio.h>void main(){clrscr();int ch;cout<<"Enter the number of rows\n";cin>>ch;for(int i=1;i<=ch;++i){for(int j=1;j<=i;++j)PREPARED BY BIJENDER KUMAR Page

C++ PRACTICAL FILE

{cout<<"*";}cout<<"\n";}getch();}

Output


C++ PRACTICAL FILE

Q24. (b) Program to generate the following pattern 112123….

Solution Code#include<iostream.h>#include<conio.h>void main(){clrscr();int ch;cout<<"Enter the number of rows\n";cin>>ch;for(int i=1;i<=ch;++i){for(int j=1;j<=i;++j)


C++ PRACTICAL FILE

{cout<<j;}cout<<"\n";}getch();}

Output


C++ PRACTICAL FILE

Q25. Program to show sum of 10 elements of array and show the averageSolution Code#include<iostream.h>#include<conio.h>void main(){clrscr();float a[10],sum=0,avg;cout<<"Enter 10 elements of array\n";for(int i=0;i<10;++i){cin>>a[i];sum=sum+a[i];}avg=sum/10;cout<<"Sum is"<<sum;


C++ PRACTICAL FILE

cout<<"\nAverage is"<<avg;getch();}

Output


C++ PRACTICAL FILE

Q26.Program to perform linear searchSolution code//Program to perform linear search#include<iostream.h>#include<conio.h>void main(){clrscr();float a[10],limit,n,f=0,pos;cout<<"Enter the limit";cin>>limit;for(int i=0;i<limit;++i){cin>>a[i];}cout<<"Enter number you want to search";cin>>n;for(i=0;i<limit;++i)


C++ PRACTICAL FILE

{if(n==a[i]){pos=i+1;f=1;}break;}if(f==1){cout<<"The number is at pos"<<pos;}else{cout<<"Number is not found";}getch();}Output


C++ PRACTICAL FILE

Q28. Program to find the maximum number in an arraySolution code//Program to find the maximum number in an array#include<iostream.h>#include<conio.h>void main(){int a[10],limit,largest;cout<<"Enter the limit";cin>>limit;cout<<"Enter elements";for(int i=0;i<limit;++i){cin>>a[i];}largest=a[0];for(i=1;i<limit;++i)


C++ PRACTICAL FILE

{if(largest<a[i]){largest=a[i];}cout<<"Largest number in an array is"<<largest;}getch();}Output


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