Thread: Array can't be created (expression must have a constant value)

Hi! I've try to make a small program that shows the error, but I still don't understand why this doesn't work.

If I have the code:

Code:

#include <stdio.h>


int main() {


	char genKey[10];


	return 0;
}

It works fine. But if I try to create a variable and initialize it to 10. Then Visual Studio complains.

Code:

#include <stdio.h>


int main() {


	int textLen = 10;
	char genKey[textLen];


	return 0;
}

I thought this meant the same thing, but it doesn't? Because the code in the second example doesn't compile.