Difference between void main and int main?
This question already has an answer here:
The difference is one is the correct way to define main , and the other is not.
And yes, it does matter.
int main(int argc, char** argv)
or
int main()
is the proper definition of your main per the C++ spec.
void main(int argc, char** argv)
is not and was, IIRC, a perversity that came with Microsoft's C++ compiler.
https://isocpp.org/wiki/faq/newbie#main-returns-int
Bjarne Stroustrup made this quite clear:
The definition void main() is not and never has been C++, nor has it even been C.
See reference.
You should use int main . Both the C and C++ standards specify that main should return a value.