Super Awesome Debugging Technique with Comments

Here is a trick I learned many many years ago and it remains one of the best tools in my debugging toolbox for all programming languages. This example just happens to be in C++.

#include <iostream>

int main(int argc, const char * argv[]) {

    std::cout << "Hello\n";

    

//*

    std::cout << "Hello, World!\n";

    

/*/

    std::cout << "A different Hello!\n";

//*/

    return 0;

}

now remove the first slash in the front of the first comment and you get:

#include <iostream>

int main(int argc, const char * argv[]) {

    std::cout << "Hello\n";

    

/*

    std::cout << "Hello, World!\n";

    

/*/

    std::cout << "A different Hello!\n";

//*/

    return 0;

}

This is such a handy debugging technique.