C Program to print HELLO

       #include <stdio.h>

       void main ( )

       {

             printf( "HELLO  \n");

        }

#include <stdio.h> tells the compiler to include information about standard input /output library.

main calls library function  printf to print HELLO and \n represents the new line character.

 OR

       #include <stdio.h>

       #define begin main

       int begin( )

       {

             printf("HELLO");

        }