Thread: subroutine question int or void for declared return value

I realize for the main function that int main(void) is recommended instead of void main(void) but what about subroutines?

I still see subroutines using void return declarations 'void insertString(source[],int index, int remove)' for example.

So I'm not sure what the guideline is for declared return values with subroutines.

Originally Posted by grumpy

main() is special. A program is not even required to work correctly (or compile or link) if main() does not return int. Or, more formally, an implementation (compiler, library, etc) is only required to support int main().

Other functions can have any return type the programmer might consider appropriate (int, void, pointers, double, struct types, enums, etc).

Understood, void is fine if its returning no value? Thanks!