does c++ standard prohibit the void main() prototype?

Question

In section 3.6.1.2 of both C++ Standard 1998 and 2003 editions,

An implementation shall not predefine the main function. This function shall not be ov

Answer 1

As far as parameters are concern ,it allows

1. int main()

2. int main(int argc , char * argv[])

3. int main(int argc , char * argv[] , char * envr[])

But as per standard return type should be int for consistency purpose.