Does #include affect program size?

Question

When my cpp file uses #include to add some header, does my final program\'s size gets bigger? Header aren\'t considered as compilation units, but the content of

Answer 1

And you can also define global variables in header files (although I wouldn't recommend it). If you do, you should surround them with #ifdef/#end blocks so that they don't get defined in more than one compilation unit (or the linker would complain). In any case, this would increase the program's size.