C++ windows executable compiled with Linux needs additional DLL

Question

I want to write C++ code and compile it for Windows from an Linux machine. I began with something simple:

#include <iostream>

using namespace std;

int a, b;

int main()
{
    cin >> a >> b;
    cout << a+b;
}

I compiled it using : i686-w64-mingw32-g++ main.cpp -o suma.exe. When I run it from the windows machine, it says : The code execution cannot proceed because libstdc++-6.dll was not found.Reinstalling the program may fix this problem. When I downloaded this DLL, it gave me an error for other missing DLL. How can I compile code without any DLL error?