Question

Can we use the char main() as a return function.

Answer 1

yesss you can do

Answer 2

It depends on the C (or C++) compiler (and the enabled compiler flags). The compiler used by OnlineGDB allows you to do that.

But why would you want to do that in the first place? What is wrong with int, the default return value?

Answer 3

yes we can return a char in main() function by using char main()