Why r u not accepting void main() instead of int main() ?

Answer 1

it's a standard! return value of main() is verified to decide whether the program ran successfully without errors and in handled exceptions.
return 0 is used to imply successful execution.
any other return value simply denotes failure

Some compiler softwares on Windows allow void main() but then they are NOT standard!!!

Answer 2

Hey Hira ,

I would like to correct you if you don't mind .

the correct way to define main is

int main (int argc, char ** argv)

and

void main(int argc, char **argv )

as per the C++ spec .

coming to your question .
it's common confusion arise to C++ beginner is Should I use Void or int ??

main() must return int . some compiler accept Void main ( int argc, char **argv), BUT THAT IS NON STANDARD AND SHOULDN'T BE USED. instead use
int main (int argc, char **argv)
{

return 0;
}

if you don't know what else return just say Return 0;

return 0 ; meaning successful execution of program

Hope you understood ..