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

#define  log_int_expr(n)  (printf("%s == %d  // using macro\n", (#n), (n)))
// #n will be replaced with a string literal containing the expression passed
// to this macro.

int main(int argc, char* argv[]) {
    int n = 5;
    printf("n * 5 == %d  // using printf(…) directly\n", n * 5);

    log_int_expr(n * 5);
    // ==> Will expand to printf("%s == %d\n", "n * 5", n * 5);
    
    return EXIT_SUCCESS;
}
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