The Old New Thing

Use the #error directive to check whether the compiler even sees you

April 9, 2008 Apr 9, 2008 04/9/08

Raymond Chen

You may find yourself in a twisty maze of s. Or you may be wondering why your macros aren't working. I have these lines in my header file: but when I try to use them, I get errors. Any idea why this is happening? First, make sure the compiler even sees you. Notice that for macros, generating a preprocessed file doesn't accomplish ...