Fun with #define in C

I was messing around the other day with C/C++ and began to realize what all you could do with #define. I knew it was just a text replacement, so it could probably be anything. So I began to wonder, what can’t it do? I did some tests, and here are a few things that worked:

	/// test #1
	#define u using
	#define n namespace
	#define s std
	// so can this work?
	u n s;
	// yes indeed it can!
	/// test #2
	#define spit return
	// does it work?
	int meaningOfLife() {
	spit 42;
	}
	// meaningOfLife() returns 42
	/// test #3 - let's go more in depth.
	#define thing int
	#define methodName meaningOfLife()
	#define answer 42
	// let's test it:
	thing methodName {
	// we defined spit before so I didn't redefine it
	spit answer;
	}
	// that returns 42!

view raw define.c hosted with ❤ by GitHub

Now, I realize this isn’t exactly the ideal way to do things, but it seems that with a WHOLE lot of #define, you could make your whole program just random words!