Write a program to display contents of file “a.txt” on the screen.

C File =>

// Write a program to display contents of file “a.txt” on the screen. 

 #include<stdio.h>
#include<stdlib.h>
int main() {
   FILE *fp;
   char ch;
   fp=fopen("a.txt","r");
   if(!fp)
     printf("\n Error in reading file");
   else
  {
     while((ch=fgetc(fp))!=EOF)
        printf("%c",ch);
   }
  return 0;
}

Note :  First create a.txt file and then write above c file