FILE Handling through C++

Functions

Fopen()

Fgets()

Fputs()

Fclose()

#include<iostream.h>

#include<conio.h>

void main()

{

FILE *fp;

Char name[40];

Char ans=’y’;

Int age;

Float bs;

Clrscr();

Fp=fopen(“EMPLOYEE.DAT”,”w”);

If(fp==NULL)

{

cout<<“Cannot open file”;

exit();

}

while(ans= =’Y’ || ans= =’y’)

{

cout<<“\n Enter name, age and basic salary:\n”;

cin>>name>>age>>bs;

fputs(fp,”%s%d%f\n”,name,age,bs);

cout<<”Another employee(y/n)”;

cin>>ans;

}

fclose(fp);

}

#include<iostream.h>

#include<conio.h>

void main()

{

FILE *fp;

Char name[40];

Int age;

Float bs;

Clrscr();

Fp=fopen(“EMPLOYEE.DAT”,”r”);

If(fp==NULL)

{

cout<<“Cannot open file”;

exit(0);

}

while(fgets(fp,”%s%d%f”,&name,&age,&bs)!=EOF)

cout<<name<<age<<bs;

fclose(fp);

}

#include<iostream.h>

#include<conio.h>

void main()

{

FILE *infile;

Char name[20];

Char street[20];

Char city[15];

Char pin[7];

Int cho=1;

Char s[20];

Clrscr();

Cout<<”File name?\n”;

Cin>>s;

Infile=fopen(s,”a”);

While(cho==1)

{

cout<<“\n Type your name:”;

cin>>name;

cout<<“\n Type your street name:”;

cin>>street;

cout<<“\n Type your city name:”;

cin>>city;

cout<<“\n Type your pincode:”;

cin>>pin;

fputs(infile,”%s\t”,name);

fputs(infile,”%s\t”,street);

fputs(infile,”%s\t”,city);

fputs(infile,”%s\t”,pin);

fputs(infile,”\n”);

cout<<“Enter 1 to continue:”;

cin>>cho;

}

fclose(infile);

}

#include<iostream.h>

#include<conio.h>

void main()

{

FILE *infile;

Char name[20];

Char street[20];

Char city[15];

Char pin[7];

Char s[20];

Clrscr();

Cout<<“File Name?\n”;

Cin>>s;

If((infile=fopen(s,”r”))=NULL)

{

cout<<“Cannot open file”;

exit();

}

while(fgets(infile,”%s%s%s%s”,name,street,city,pin)!=EOF)

{

cout<<“\n Name:\t”<<name;

cout<<“\n Street:\t”<<street;

cout<<“\n City:\t”<<city;

cout<<“\n Pin:”\t”<<pin;

printf(“\n”);

}

fclose(infile);

getch();

}