Include one header file in each source file

Question

Say you have 100s of source files (.c or .cpp) files, and you want to include some definitions, function/variable declarations in each of them. Normally in C/C++, you use he

Answer 1

Header files are not definitions - they are declarations.

You put as few in as possible - saves the compiler work and also inter-dependencies.

You can even reduce the number further by using forward declarations in those header files.

If you are clever you can get you IDE to help you out with filling in the gaps instead of hurting your fingers.