File Handling in C:- The below example will show you how you can read the data from file and write the data in file using C language.

file.c

#include<stdio.h>
#include<conio.h>
#include<process.h>
#define true 1
main()
{
FILE *fptr;
char ch;
clrscr();

    //Write the File Charchter by Charchter

    fptr=fopen("MYFILE.txt","w");

    if(fptr==NULL)
    {
        printf("cant create file");
        getch();
        exit(1);
    }
    printf("enter the text:=");

        while(true)
        {
            ch=getchar();

            if(ch=='!')
            break;

            fputc(ch,fptr);
        }
fclose(fptr);

       //Read the File Charchter by Charchter

    fptr=fopen("MYFILE.txt","r");

    if(fptr==NULL)
    {
        printf("cant read the file");
        getch();
        exit(1);
    }


        while(true)
        {

            if(feof(fptr))
            break;

            printf("%c",fgetc(fptr));
        }
fclose(fptr);
getch();
}