How does including unneccesary header file affect my executable

Question

Does including unneccesary header files increase my executable or affect time of compiling.

For ex. for basic input output programs i definitely need stdio.h , but if i also include other headers like time.h, stdlib.h ,math.h how it would affect the executable.

Answer 1

It won't affect the size of executable but yeah it will effect the time for compiling.

More includes more compile time.