[Dev-C++] iterating by 2

[<tam...@ms...>]

I have been tasked with a problem in my newbie manual to use a "for loop"=
 and to console out by 2's from 0 to 20 here's what I have done and I was=
 wondering 1st why it doesn't work and 2nd how do I make it work.

#include <iostream>
int main()
{
    // --- iterate an integer by 2
        for (int i =3D 0; i <=3D 20; i+=3D2){
        std::cout << i << '\n'; =20
       =20
    }
    // --- pause system
    char end[5];
    std::cin >> end;
  return 0;
}

Thanks in advance
Danny