/* File: notop.c 
   Demonstrate working principle of the negation operator ! */
#include <stdio.h>

int main() {
    double x = 4.0, y = 0;

    /* when the operand is an integer */
    printf("!0 = %d\n", !0);
    printf("!1 = %d\n", !1);

    /* when the operand is a floating-point number */
    printf("!0.0 = %d\n", !0.0);
    printf("!0.1 = %d\n", !0.1);

    /* when the operand is a variable */
    printf("!x = %d\n", !x);
    printf("!y = %d\n", !y);

    /* when the operand is an expression */
    printf("y > x = %d\n", y > x);
    printf("!(y > x) = %d\n", !(y > x));
    return 0;
}