eee iii year oops lab manual
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THENI KAMMAVAR SANGAM COLLEGE OF TECHNOLOGY
Electrical & Electronics Engineering
OBJECT ORIENTED PROGRAMMING
RECORD NOTE
NAMEREGISTRATION NUMBER
THENI KAMMAVAR SANGAM COLLEGE OF TECHNOLOGY
KODUVILARPATTI, THENI DISTRICT-625534
BONAFIDE CERTIFICATE
NAMEREGISTRATION NUMBERSEMESTERDEPARTMERTSUBJECTSUBJECT CODE
Certified that this is the bonafide record of work done by the above student
in Object Oriented Programming Laboratory during the year 2010-2011.
LAB-IN CHARGE HEAD OF THE DEPARTMENT
(Mr.J.Ayyana prabu) (Mr.K.Vel kumar)
Submitted for the Pratical Examination held on 27.10.2010
INTERNAL EXAMINER EXTERNAL EXAMINER
EX NO DATE CONTENTS PAGE NO STAFFSIGNATURE
1 Simple Interest
2 Enumeration Datatype
3 Function Invocation
4 Function Overloading
5 Array
6 Call by Reference
7 Assertions
8 Structure
9 Structure pointer operator
10 Union
11 Diff b/t Structure and Union
12 Class
13 Constructor
14 Destructor
15 Static Member
16 This Pointer
17 ADT Conversions
18 Unary Operator Overloading
19 Binary Operator Overloading
20 Function Selection
EX NO DATE CONTENTS PAGE NO STAFF
SIGNATURE21 Pointer Operators
22 Derived Class
23 Virtual Function
24 Exception Handling
25 Class Template
26 Function Template
27 Formatted I/O Operations
28 Unformatted I/O operations
29 Predefined Manipulators
30 User Defined Manipulators
31 File Modes
32 File Pointer and Manipulators
33 File I/O
Ex.No: Date:
SIMPLE INTEREST
AIM:
ALGORITHM:
PROGRAM:
//Program for Simple Interest
#include<iostream.h>#include<conio.h> void main() {
int p,q,r,i;clrscr();cout<<" Program for simple Interest "<<"\n";cout<<"==============================="<<"\n";cout<<" Enter the values of P, Q and R "<<"\n";cin>>p>>q>>r;i=(p*q*r)/100;cout<<"Simple Interest="<<i;getch();
}
OUTPUT:
RESULT:
Ex.No: Date:
ENUMERATION DATATYPE
AIM:
ALGORITHM:
PROGRAM:
//Program for Enumeration Datatype
#include<iostream.h>#include<conio.h>void main(){clrscr();
enum day
{sunday,monday,tuesday,wednesday,thursday,friday,saturday
};
day theday;
int j; cout<<" Program for Enumerators "<<"\n"; cout<<"====================================="<<"\n"; cout<<"Please enter the day of a week(0-6):"; cin>>j; theday=day(j); if(theday==sunday||theday==saturday) {
cout<<"Answer:Holiday"; } else {
cout<<"Answer:Working day"; } getch();}
OUTPUT:
RESULT:
Ex.No: Date:
FUNCTION INVOCATION
AIM:
ALGORITHM:
PROGRAM:
//Program for Function Invocation
#include<iostream.h>#include<conio.h> void swap(int a,int b) {
int c;cout<<"Before swaping:";cout<<"a="<<a<<" "<<"b="<<b<<"\n";c=a;a=b;b=c;cout<<"After swaping:";cout<<"a="<<a<<" "<<"b="<<b;
}void main() {
int a,b;clrscr();cout<<" Program for Function Invocation "<<"\n";cout<<"==============================="<<"\n";cout<<"Enter the values of a and b "<<"\n";cin>>a>>b;
swap(a,b);
getch(); }
OUTPUT:
RESULT:
Ex.No: Date:
FUNCTION OVERLOADING
AIM:
ALGORITHM:
PROGRAM:
//Program for Function Overloading
#include<iostream.h>#include<conio.h>void volume(int a) {
int c; cout<<"First Function"<<"\n"; c=a+a+a;
cout<<"Answer c="<<c<<"\n"; }void volume(double a,int b) {
int c; cout<<"Second Function"<<"\n"; c=3.14*a*a*b; cout<<"Answer c="<<c<<"\n"; }void volume(long l,int b,int h) {
int c; cout<<"Third Function"<<"\n"; c=l+b+h; cout<<"Answer c="<<c<<"\n"; }void main() { clrscr(); cout<<" Program for Function Overloading "<<"\n"; cout<<"================================"<<"\n"; volume(10); volume(2.5,8); volume(100,85,15);
getch(); }
OUTPUT:
RESULT:
Ex.No: Date:
ARRAY
AIM:
ALGORITHM:
PROGRAM: //Program for Array
#include<iostream.h>#include<conio.h>void main() {
clrscr();int a[5][5],b[5][5],c[5][5],m,n,i,j;cout<<" Program for Array "<<"\n";cout<<"============================================="<<"\n";cout<<"Enter the row & column size for first matrix:"<<"\n";cin>>m>>n;cout<<"Enter the elements:"<<"\n";for(i=0;i<m;i++) { for(j=0;j<n;j++) { cin>>a[i][j]; }
}cout<<"Enter the row & column size for second matrix:"<<"\n";cin>>m>>n;cout<<"Enter the elements:"<<"\n";for(i=0;i<m;i++) { for(j=0;j<n;j++) { cin>>b[i][j]; } }cout<<"The added matrix is:"<<"\n";for(i=0;i<m;i++) { for(j=0;j<n;j++) { c[i][j]=a[i][j]+b[i][j]; cout<<"\t "<<c[i][j]; } cout<<"\n"; }getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
CALL BY REFERENCE
AIM:
ALGORITHM:
PROGRAM:
//Program for Call by Reference
#include<iostream.h>#include<conio.h>void swap(int *a,int *b) {
int c;cout<<"Before swaping:";cout<<"a="<<*a<<" "<<"b="<<*b<<"\n";c=*a;*a=*b;*b=c;cout<<"After swaping:";cout<<"a="<<*a<<" "<<"b="<<*b;
}void main() {
int a,b;clrscr();cout<<" Program for Call By Reference "<<"\n";cout<<"============================="<<"\n";cout<<"Enter the values of a and b "<<"\n";cin>>a>>b;swap(&a,&b);getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
ASSERTIONS
AIM:
ALGORITHM:
PROGRAM:
//Program for Assertion
#include<iostream.h>#include<conio.h>#include<assert.h> void post(int e,int f) { int g; cout<<"Checking for post condition"<<"\n"; g=e; e=f; f=g; assert((f==g)&&(f!=e)); cout<<"Post condition checked"<<"\n"; cout<<"The value of a and b after swaping"<<"\n"; cout<<"__________________________________"<<"\n"; cout<<"The Value of a is:"<<e<<"\n"; cout<<"The Value of b is:"<<f<<"\n"; } void pre(int c,int d) { int e; cout<<"Checking for precondition"<<"\n"; assert(c!=d); cout<<"Precondition checked"<<"\n"; post(c,d); }void main() { clrscr(); cout<<" Program for swaping using assert() "<<"\n"; cout<<"=================================="<<"\n"; int a,b; cout<<"Enter the value of a:"; cin>>a; cout<<"enter the value of b:"; cin>>b; pre(a,b); getch(); }
OUTPUT:
RESULT:
Ex.No:Date:
STRUCTURE
AIM:
ALGORITHM:
PROGRAM:
//Program for Structure
#include<iostream.h>#include<conio.h>struct student {
int rollno;char name[25];char branch[15];int marks;
};void main() {
clrscr();student s1;cout<<” Program for structure ”<<”\n”;cout<<”==================”<<”\n”;cout<<"Enter the data of student";cout<<"Roll no:";cin>>s1.rollno;cout<<"Name:";cin>>s1.name;cout<<"Branch:";cin>>s1.branch;cout<<"Marks";cin>>s1.marks;cout<<"Student report:"<<"\n";cout<<"_____________"<<"\n";cout<<"Roll no:"<<s1.rollno<<"\n";cout<<"Name:"<<s1.name<<"\n";cout<<"Branch:"<<s1.branch<<"\n";cout<<"Percentage:"<<s1.marks/5<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
STRUCTURE POINTER OPERATOR
AIM:
ALGORITHM:
PROGRAM:
//Program for Structure Pointer Operator
#include<iostream.h>#include<conio.h>void main() {
clrscr();struct date { int month;
int day;int year;
};struct date *date_ptr;date_ptr->month=12;date_ptr->day=12;date_ptr->year=1987;cout<<" Program for Structure Pointer Operator "<<"\n";cout<<"======================================"<<"\n";cout<<"Month:"<<date_ptr->month<<"\n";cout<<"Day:"<<date_ptr->day<<"\n";cout<<"Year:"<<date_ptr->year<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
UNION
AIM:
ALGORITHM:
PROGRAM:
//Program for Union
#include<iostream.h>#include<conio.h>union student {
int rollno;char name[25];char branch[15];int marks;
};void main() {
clrscr();student s1,s2,s3,s4;cout<<” Program for Union ”<<”\n”;cout<<”==================”<<”\n”;cout<<"Enter the data of student";cout<<"Roll no:";cin>>s1.rollno;cout<<"Name:";cin>>s2.name;cout<<"Branch:";cin>>s3.branch;cout<<"Marks";cin>>s4.marks;cout<<"Student report:"<<"\n";cout<<"_____________"<<"\n";cout<<"Roll no:"<<s1.rollno<<"\n";cout<<"Name:"<<s2.name<<"\n";cout<<"Branch:"<<s3.branch<<"\n";cout<<"Percentage:"<<s4.marks/5<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
DIFF B/T STRUCTURE AND UNION
AIM:
ALGORITHM:
PROGRAM:
//Program for Diff B/T Structure and Union
#include<iostream.h>#include<conio.h>struct boy { char name[25]; int id; }st;union girl { char name[25]; int id; }un;void main() {
clrscr();cout<<" Program for Diff B/T Structure and Union "<<"\n";cout<<"========================================="<<"\n";cout<<" The Size of Structure is "<<sizeof(st)<<" Bytes"<<"\n";cout<<" The Size of Union is "<<sizeof(un)<<" Bytes"<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
CLASS
AIM:
ALGORITHM:
PROGRAM:
//Program for Class
#include<iostream.h>#include<conio.h>class item{
int number;float cost;public: void getdata(int a,float b) { number=a; cost=b; } void putdata() { cout<<"No:"<<number<<"\n" ; cout<<"Cost:"<<cost<<"\n"; }
};void main(){ clrscr(); item x; cout<<" Program for class "<<"\n"; cout<<"================="<<"\n"; cout<<"object x"<<"\n"; x.getdata(100,45.5); x.putdata(); item y; cout<<"object y"<<"\n"; y.getdata(200,75.5); y.putdata(); getch();}
OUTPUT:
RESULT:
Ex.No:Date:
CONSTRUCTOR
AIM:
ALGORITHM:
PROGRAM:
//Program for Constructor
#include<iostream.h>#include<conio.h>class Bag {
private: int contents[25]; int itemcount;
public:Bag() {
itemcount=0; }void put(int item) {
contents[itemcount++]=item; }void show() {
for(int i=0;i<itemcount;i++)cout<<contents[i]<<" ";cout<<"\n";
} };void main() {
clrscr();cout<<" Program for Constructor "<<"\n";cout<<"===================================="<<"\n";int item;Bag bag;while(1) {
cout<<"Enter the item number put into bag:";cin>>item;if(item==0)break;bag.put(item);cout<<"Items in bag";bag.show();
} }
OUTPUT:
RESULT:
Ex.No:Date:
DESTRUCTOR
AIM:
ALGORITHM:
PROGRAM:
//Program for Destructor
#include<iostream.h>#include<conio.h>class test {
public:test();~test();
};test::test() {
cout<<"constructor of class test called"<<"\n"; }test::~test() {
cout<<"destructor of class test called"<<"\n"; }void main() {
clrscr();cout<<" Program For Desructor "<<"\n";cout<<"==============================="<<"\n";test x;cout<<"terminating main()"<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
STATIC MEMBER
AIM:
ALGORITHM:
PROGRAM:
//Program for Static Member
#include<iostream.h>#include<conio.h>class test{
int code;static int count;public: void setcode() { code=++count; } void showcode() { cout<<"Object Number:"<<code<<"\n"; } static void showcount() { cout<<"count="<<count<<"\n"; }
};int test::count;void main(){
clrscr();cout<<”Program fot static Member”<<”\n”;cout<<”==================== ”<<”\n”;test t1,t2;t1.setcode();t2.setcode();test::showcount();test t3;t3.setcode();test::showcount();t1.showcode();t2.showcode();t3.showcode();getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
THIS POINTER
AIM:
ALGORITHM:
PROGRAM:
//Program for this pointer
#include<iostream.h>#include<conio.h>class student { private: int a,b; public: void setdata(int a) { b=a; cout<<"Address of my object:"<<this<<"\n"; this->showdata(); } void showdata() { cout<<"Data accessed in normal way:"<<b<<"\n"; cout<<"Data accessed by using this pointer:"<<this->b<<"\n"; } }; void main()
{ clrscr(); cout<<" Program for this pointer "<<"\n"; cout<<"====================================="<<"\n"; student N; N.setdata(25); getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
ADT CONVERSIONS
AIM:
ALGORITHM:
PROGRAM:
//Program for ADT Conversions
#include<iostream.h>#include<conio.h>void main() {
clrscr();int a=20000,b=20000,c;cout<<" Program for ADT Conversions "<<"\n";cout<<"==========================="<<"\n";cout<<"Implicit Type Conversion"<<"\n";c=a+b;cout<<"Answer:"<<c<<"\n";cout<<"Explicit Type Conversion"<<"\n";;int x=20000,y=20000;unsigned int z=(unsigned int) x + (unsigned int )y;cout<<"Answer:"<<z;getch();
}
OUTPUT:
RESULT:
Ex.No: Date:
UNARY OPERATOR OVERLOADING
AIM:
ALGORITHM:
PROGRAM:
//Program for Unary Operator Overloading
#include<iostream.h>#include<conio.h>class space{
private: int x,y,z;
public: void getdata(int a,int b) { x=a; y=b; } void display() { cout<<"x="<<x<<"\n"; cout<<"y="<<y<<"\n"; } void operator++() { x=++x; y=++y;
} void operator--() { x=--x; y=--y; }};
void main() { clrscr(); space s;
cout<<" Program for Unary Operator Overloading "<<"\n"; cout<<"======================================"<<"\n";
cout<<"UNARYPLUS OPERATOR"<<"\n"; cout<<"======================"<<"\n";
cout<<"Initial values of x and y"<<"\n"; s.getdata(10,-20); s.display(); ++s;
cout<<"Final values of x and y "<<"\n"; s.display(); cout<<"UNARY MINUS OPERATOR"<<"\n"; cout<<"======================="<<"\n"; cout<<"Initial Values of x and y"<<"\n"; s.getdata(10,-20);
s.display(); --s; cout<<"Final values of x and y "<<"\n"; s.display(); getch(); }
OUTPUT:
RESULT:
Ex.No:Date:
BINARY OPERATOR OVERLOADING
AIM:
ALGORITHM:
PROGRAM:
//Program for Binary Operator Overloading
#include<iostream.h>#include<conio.h>class complex {
private: float real; float imag; public: complex() { real=imag=0.0; } void getdata()
{ cout<<"Real part:"; cin>>real; cout<<"Imag part:"; cin>>imag; }
void outdata() { cout<<"The Final Answer is:"; cout<<"("<<real; cout<<","<<imag<<")"; } complex operator+(complex c2)
{ real=real+c2.real; imag=imag+c2.imag; return *this;
} };
void main() {
clrscr(); complex c1,c2,c3; cout<<" Program for Binary operator Overloading "<<"\n"; cout<<"======================================="<<"\n"; cout<<"Enter the complex no c1"<<"\n"; c1.getdata();
cout<<"Enter the complex no c2"<<"\n"; c2.getdata(); c3=c1+c2; c3.outdata(); getch(); }
OUTPUT:
RESULT:
Ex.No: Date:
FUNCTION SELECTION
AIM:
ALGORITHM:
PROGRAM:
//Program for Function Selection
#include<iostream.h>#include<conio.h>void volume(int a) { int c;
cout<<"1)Exact Match"<<"\n"; c=a+a+a; cout<<"Answer:"<<c<<"\n"; }void volume(float b,int d) { int c; cout<<"2)Standard Type Promotion"<<"\n";
c=b+d; cout<<"Answer:"<<c<<"\n"; }void volume(long d,double e,double f) { int c; cout<<"3)Standard Type Conversion"<<"\n"; c=d+e+f; cout<<"Answer:"<<c<<"\n"; }void main() { clrscr(); cout<<" Program for Function Selection Algorithm "<<"\n"; cout<<"========================================"<<"\n"; volume(65);
volume(5.5,65500);volume(10L,85,100);getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
POINTER OPERATORS
AIM:
ALGORITHM:
PROGRAM:
//Program for Pointer Operators
#include<iostream.h>#include<conio.h>void main() {
clrscr();int a ,*ptr;cout<<" Program for pointer operators "<<"\n";cout<<"======================================="<<"\n";cout<<"Enter the value of a:";cin>>a;ptr=&a;cout<<"The Value of variable a is:"<<a<<"\n";cout<<"The Address of variable a is:"<<ptr<<"\n";*ptr=(*ptr)/2;cout<<"Now The Value of a is:"<<(*ptr)<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
DERIVED CLASS
AIM:
ALGORITHM:
PROGRAM:
//Program for Derived Class(Inheritance)
#include<iostream.h>#include<conio.h>class student {
protected: int rollno,percentage;
public:void getmarks(int a,int b) {
rollno=a;percentage=b;
} };class girl:public student {
public:void display() {
cout<<"rollno:"<<rollno<<"\n";cout<<"percentage:"<<percentage<<"\n";
} };class boy:public student {
public:void display() {cout<<"rollno:"<<rollno<<"\n";cout<<"percentage:"<<percentage<<"\n"; }
};
void main() {
clrscr();girl s;boy t;cout<<"program for derived class"<<"\n";s.getmarks(1990,98);t.getmarks(1991,99);
cout<<"anna university result"<<"\n";s.display();t.display();getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
VIRTUAL FUNCTIONS
AIM:
ALGORITHM:
PROGRAM:
//Program for Virtual Function
#include<iostream.h>#include<conio.h>class base {
public:virtual void display() {
cout<<"Display base"<<"\n"; }virtual void show() {
cout<<"Show base"<<"\n"; }
};class derived:public base {
public:void display() {
cout<<"Display derived"<<"\n"; }void show() {
cout<<"Show derived"<<"\n"; }
};
void main() {
clrscr();base B;derived D;base *point;cout<<" Program for Virtual functions "<<"\n";cout<<"============================="<<"\n";cout<<"Pointer points Base class object"<<"\n";point=&B;point->display();point->show();
cout<<"Pointer points Derived class object"<<"\n";point=&D;point->display();point->show();getch();
}
OUTPUT:
RESULT:
Ex.No: Date:
EXCEPTION HANDLING
AIM:
ALGORITHM:
PROGRAM:
//Program for Exception Handling
#include<iostream.h>#include<conio.h>#include<exception.h>void divide(int x,int y,int z){
cout<<"We are inside the function"<<"\n";if((x-y)!=0) {
int r=z/(x-y);cout<<"Result="<<r<<endl;
}else {
throw(x-y); }
}void main(){
cout<<" Program For Exception Handling "<<"\n";cout<<"=============================="<<"\n";try {
cout<<"We are inside the try block"<<"\n";divide(10,20,30);divide(10,10,20);
}catch(int i) {
cout<<"Caught the Exception"<<"\n"; }getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
CLASS TEMPLATE
AIM:
ALGORITHM:
PROGRAM:
//Program for Class Template
#include<iostream.h>#include<conio.h>template<class t1,class t2>class test {
private: t1 a; t2 b; public: test(t1 x,t2 y) { a=x;
b=y; } void show() { cout<<"Answer:"<<"a="<<a <<" and "<<"b="<<b<<"\n"; } }; void main() { clrscr(); cout<<" Program for Class Template "<<"\n"; cout<<"=========================="<<"\n"; test<float,int> test1(1.23,123); test<int,char> test2(100,'w'); test1.show(); test2.show(); getch(); }
OUTPUT:
RESULT:
Ex.No:Date:
FUNCTION TEMPLATE
AIM:
ALGORITHM:
PROGRAM:
//Program for Function Template
#include<iostream.h>#include<conio.h>template<class T>void swap(T &x,T &y) {
T temp =x;x=y;y=temp;
}void fun(int m,int n,float a,float b) {
cout<<"Values of m and n before swap:"<<m<<" "<<n<<"\n";swap(m,n);cout<<"Values of m and n after swap:"<<m<<" "<<n<<"\n";cout<<"Values of a and b before swap:"<<a<<" "<<b<<"\n";swap(a,b);cout<<"Values of a and b after swap:"<<a<<" "<<b<<"\n";
}void main() {
clrscr();cout<<" Program for Function Template "<<"\n";cout<<"=========================================="<<"\n";fun(100,200,11.22,22.33);getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
FORMATTED I/O OPERATION
AIM:
ALGORITHM:
PROGRAM:
//Program for Formatted I/O Operations
#include<iostream.h>#include<conio.h>void main() {
clrscr();char *name[5]={"Ram","Raj","Raju "};float cut[5]={195.253,196.642,197.582};cout<<" Students Cutoff Marks "<<"\n";cout<<"========================="<<"\n";cout<<"Name "<<" "<<" Result "<<"\n";cout<<"========================="<<"\n";for(int i=0;i<3;i++) {
cout.setf(ios::left,ios::adjustfield);cout.fill('*');cout.width(12);cout<<name[i];cout<<" ";cout.fill('*');cout.precision(2);cout.width(12);cout<<cut[i]<<"\n";
}cout<<"========================="<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
UNFORMATTED I/O OPERATIONS
AIM:
ALGORITHM:
PROGRAM:
//Program for Unformatted I/O Operations
#include<iostream.h>#include<conio.h>#include<string.h>void main() {
clrscr();cout<<" Program for Unfomatted I/O Operations "<<"\n";cout<<"====================================="<<"\n";int count=0;char c,test[40];cout<<"Enter your Name:";cin.get(c);cout<<"My name is ";while(c!='\n') {
cout.put(c);count++;cin.get(c);
}cout<<"\n";cout<<"Enter Your Native Place:";cin.getline(test,40);cout<<"My Native Place is ";int len=strlen(test);cout.write(test,len);cout<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date :
STANDARD MANIPULATOR
AIM:
ALGORITHM:
PROGRAM:
//Program for Standard Manipulator
#include<iostream.h>#include<conio.h>#include<iomanip.h>void main() {
clrscr();char *name[5]={"Raj","Ram","Rajesh"};float cut[5]={195.253,196.642,197.582};cout<<" Program for standard manipulators "<<"\n";cout<<"================================="<<"\n";cout<<" students cutoff marks "<<"\n";cout<<"================================="<<”\n”;cout<<" name "<<" "<<" result "<<"\n";cout<<"================================="<<”\n”;for(int i=0;i<3;i++) {
cout<<setw(10)<<setfill('*')<<name[i]<<" " << setw(10)<<setprecision(2)<<cut[i]<<”\n”;
}cout<<"================================="<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
USER DEFINED MANIPULATOR
AIM:
ALGORITHM:
PROGRAM:
//Program for Userdefined Manipulatots
#include<iostream.h>#include<conio.h>ostream & sp(ostream & os) {
os<<" ";return os;
}void main() {
clrscr();int w=1,x=2,y=3,z=4;cout<<" Program for User Defined Manipulator "<<"\n";cout<<"===================================="<<"\n";cout<<"Answer:";cout<<"w="<<w<<sp<<"x="<<x<<sp<<"y="<<y<<sp<<"z="<<z<<sp<<"\n";getch();
}
OUTPUT:
RESULT:
Ex.No:Date:
FILE MODES
AIM:
ALGORITHM:
PROGRAM:
//Program for Filemodes
#include<iostream.h>#include<conio.h>#include<iomanip.h>#include<fstream.h>void main() {
clrscr();char *name[5]={"Sachin","Ramesh","Tendulkar"};float cut[5]={195.253,196.642,197.582};ofstream outfile("prabu.txt",ios::out);outfile<<" program for file modes "<<"\n";outfile<<"======================"<<"\n";outfile<<" students cutoff marks "<<"\n";outfile<<"======================"<<"\n";outfile<<" name "<<" "<<" result "<<"\n";outfile<<"======================"<<"\n";for(int i=0;i<3;i++) {
outfile<<setw(10)<<setfill('*')<<name[i]<<"" <<setw(10)<<setprecision(2)<<cut[i]<<”\n”; }outfile<<"======================"<<"\n";getch();
}
OUTPUT:
cse.txtProgram for File Modes ==================Students cut off Marks================== Name Result ================== Sachin 195.25Ramesh 196.64Tendulkar 197.58 ==================
RESULT:
Ex.No:Date:
FILE POINTER AND MANIPULATIONS
AIM:
ALGORITHM:
PROGRAM:
//Program for FilePointer and Manipulations
a)Program for seekg() and tellg()
#include<iostream.h>#include<fstream.h>#include<conio.h>void main () { clrscr(); cout<<" Program for seekg() and tellg() "<<"\n"; cout<<"==============================="<<"\n"; ifstream myfile("eee.txt"); myfile.seekg(0,ios::end); cout<<"The size of Input File is:"<<myfile.tellg()<<"\n"; getch(); }
Input File:
eee.txtWe are EEE Rockers
OUTPUT:
b)Program for seekp() and tellp()
#include<iostream.h>#include <fstream.h>void main () { int pos; ofstream outfile; outfile.open ("123.txt"); outfile.write ("This is an apple",16); pos=outfile.tellp(); outfile.seekp (pos-7); outfile.write (" sam",4); outfile.close(); }
Output File:
123.txtThis is a sample
RESULT:
Ex.No:Date:
FILE I/O OPERATIONS
AIM:
ALGORITHM:
PROGRAM:
//Program for File I/O Operations
#include<iostream.h>#include<conio.h>#include<fstream.h>void main() {
fstream infile,outfile;int i,count,percentage;char name[30];infile.open("eee.txt",ios::in);outfile.open("cse.txt",ios::out);infile>>count;outfile<<" Anna University Results "<<"\n";outfile<<"======================="<<"\n";outfile<<" Name "<<" "<<" Result "<<"\n";outfile<<"======================="<<"\n";for(i=0;i<count;i++) {
infile>>name;infile>>percentage;outfile<< name <<" "<<percentage<<"\n";
}outfile<<"======================="<<"\n";infile.close();outfile.close();
}
OUTPUT:
Input File:eee.txt3Sachin 97Ramesh 98Tendulkar 99
Output File:cse.txtAnna University Results =================== Name Result ================== Sachin 97Ramesh 98Tendulkar 99 ==================
RESULT:
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