exc/med/C-programming-a-modern-standard/5-2-4_number_comparison.c

#include "stdio.h"

int main()
{
    int i = 5;
    int j = 7;
    int x;

    x = (i>j)-(j>i);
    /*
     *  -1 if i less than j
     *  0 if i equal to j
     *  +1 if i more than j
     *  */

    printf("%d: ", x);
    return 0;
}