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

#define THREE_TIMES_BUG(n) (3 * n)
// parenthesis around full expression and each arugment
#define THREE_TIMES(n) (3 * (n))
#define PRINT_INT(n)  printf("%s == %d\n", (#n), (n))
int main(int argc, char* argv[]) {
    // expect 24
    PRINT_INT(THREE_TIMES(8));  
    // expect 30
    PRINT_INT(THREE_TIMES_BUG(7 + 3));  
    PRINT_INT(THREE_TIMES(7 + 3));  

    return EXIT_SUCCESS;
}
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