#include<stdio.h>

#define SQUARE(X) (X*X)
#define TENMORE(X) X+10
#define TENMORETWO(X) (X+10)

int main(){
	printf("5 squared is %d\n", SQUARE(5));
	printf("TENMORE:  %d\n", 2 * TENMORE(5)); // At compile time:  2 * 5+10
	printf("TENMORE:  %d\n", 2 * TENMORETWO(5)); // At compile time:  2 * (5+10)
}