Why dont we put void main insted of int main

Answer 1

C/C++ use int main to return a value to the operating system when the program is finished, so it is clear if everything is ok (return 0;) or if something unexpected happed (for example return 1;). Other languages, however, don't use this anymore.

Answer 2

so why void main is used

Answer 3

This is a problem of language design. C/C++ where designed to use int main (to give feedback to the OS) other languages (like java) have other ways to handle this and use void main instead.

Answer 4

why is getch(); used