#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>

// free to adapt/copy code in this file
#define TRIPLE_BUG(n) (n * 3)
#define TRIPLE(n) ((n) * 3)
#define PRINT_INT(n) printf("%s == %d\n", (#n), (n))
#define MULTIPLY(l, r) ((l) * (r))

int main(int argc, char* argv[]) {
    // expected: 300
    printf("TRIPLE(100) == %d\n", TRIPLE(100)); 
    // expected: 600, actual 400
    printf("TRIPLE_BUG(100 + 100) == %d\n", TRIPLE_BUG(100 + 100)); 
    // expected: 600
    printf("TRIPLE(100 + 100) == %d\n", TRIPLE(100 + 100)); 
    // expected: 900
    printf("TRIPLE(100 + 100 + 100) == %d\n", TRIPLE(100 + 100));   
    // expected: 900
    PRINT_INT(TRIPLE(100 + 100 + 100));
    // can pass anything into a macro,
    // even if the result is invalid C code
    // PRINT_INT(missing_variable);
    // expected 9 * 5 = 45
    PRINT_INT(MULTIPLY(9, 5));
    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */