Thread: Casting int to enum problem

Code:

#include <iostream>

class Foo {
public:    
    enum Color { r, b, g };
    Color c;
    Foo(Color cc) : c(cc) {}
};

int main() {
    int i = 2;
    //Foo f(Foo::Color(i)); //function-style cast gives me an error
    //Foo f(Foo::Color(2)); //however this works
    Foo f((Foo::Color)i); //C-style cast works
    std::cout << f.c << '\n';
    std::cin.get();
}

From what I understand, you can cast an int to enum with a function-style cast or a C-style cast. However, the line using a function-style cast gives me the error "error C2228: left of '.c' must have class/struct/union" in Visual Studio. It works if I use a constant instead of i. Can someone explain to me why the function-style cast is giving me problems? Thanks.