/*
 * =====================================================================================
 *
 *       Filename:  file_copying.c
 *
 *    Description:  
 *
 *        Version:  1.0
 *        Created:  10/06/26 11:03:43 PM IST
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  YOUR NAME (), 
 *   Organization:  
 *
 * =====================================================================================
 */

#include <stdio.h>

/*
 *  NEW IMPORTANT LEARNING
 *   
 *  1. 
 *   EOF value is bigger than
 *   what can be stored in a variable
 *   with char data-type.
 *
 *  2.
 *   for example,
 *      c = getchar (  ) is an expression
 *      which evaluates and return a value
 *      of c variable after the assignment.
 *      This is, hence, used in much larger
 *      expression.
 */

/* copy input to output */

int
main (  ) {
    
    /* int c; */

    /* while ( ( c = getchar (  ) ) != EOF ) */ 
    /*     putchar ( c ); */
    

    int a = EOF;
    
    printf ( "%d\n", a );

    return 0;
}