C - The C Answer (2nd Edition) - Exercise 1-6

/*
Verify that the expression getchar() != EOF is 0 or 1.
*/

#include <stdio.h>

main()
{
    int c;
    
    while(c = getchar() != EOF)
    {
    	printf("%d\n", c);
    }
    printf("%d - at EOF\n", c);
}