debug宏定义的参数为lambda

debug_with_lambda.cpp

#ifdef DEBUG
#define macro(labmda)                                                                         \
    do {                                                                                           \
        labmda;                                                                                    \
    } while (0)
#define macro_call(labmda)       \
    macro(labmda())
#else
    #define macro(labmda)
    #define macro_call(labmda)
#endif
#include <stdio.h>
int main(int argc, char *argv[]) {
    int x = 100;
    macro([&]() {
            printf("hello %d\n", x); }()
    );
    macro([](int x) { printf("hello %d\n", x); }(x));
    return 0;
}