void main on-line judge compiler error?

[pfiesteria]

why following code on-line judge compiler error?

Code: Select all

void main(){
}

when I using following code, it's ok.

Code: Select all

int main(){
return 0;
}

I want to ask, when I using int main(),
what value should I return?return 0? or other value?
and why I can't use void main instead of int main?

[mf]

Current C++ standard requires that you use 'int main()'.

It should return 0. Non-zero exit code is used to indicate runtime errors, which is yet another reason to avoid 'void main()' in C - should it by accident return a non-zero value to caller, your submission will be judged as RE.

[sumankar]

This has come up so often that this should probably go into a coding styles FAQ (if its not already there).

Current C++ standard requires that you use 'int main()'.

More meat to mf's statement -- void main() *never was* C++; read this.