Reading a File in C

Below program shows how to read the file character by character.

#include<stdio.h>             

#include<stdlib.h>

void main()

{

   // here declare a file in pointer.

   FILE *filep;                           

   char ch;

     

    //fopen function is used to open a text file

    //Please note that mode of the file is r.

     

    filep =fopen("c:\\abc.txt","r"); 

     

    if (!filep)

    {

      printf ("File does not exist\n");

      getchar();

      exit(0);

    }

     

    printf("The data in file is :- \n");

     //fgetc function is used to read the character from file.

     //fgets function is used to read the string from a file.

     

     while((ch=fgetc(filep))!=EOF)  

     {

      printf("%c",ch);

     }

     

      fclose(filep);   

           

      // Here close the text file.

           

  getchar();

}    

Below program shows how to read file line by line.

#include<stdio.h>             

#include<stdlib.h>

void main()

{

   // here declare a file in pointer.

   FILE *filep;

   char *str = malloc(255);                           

   char ch;

     

    //fopen function is used to open a text file

    //Please note that mode of the file is r.

     

    filep =fopen("abc.txt","r"); 

     

    if (!filep)

    {

      printf ("File does not exist\n");

      getchar();

      exit(0);

    }

     

    printf("The data in file is :- \n");

     //fgetc function is used to read the character from file.

     //fgets function is used to read the string from a file.

     

     while(fgets(str,255,filep))    

     

     {

      printf("%s",str);

     }

     

      fclose(filep);

}

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