C++ 牙签计划

我的程序是为了玩牙签游戏而制作的，我已经坚持了一段时间了。目标是让计算机从一堆23根牙签中拔出牙签，人类也会这样做。到目前为止，我的逻辑似乎不起作用。玩家能够拔出一定数量的牙签，并且它被从总数中取出，但是当计算机取出牙签时，它只需要一根牙签。我让程序说还剩下多少，电脑拿出多少。看来，既然电脑总是拿出一根牙签，那么堆里总剩下一根牙签，这显然在数学上是不正确的。

#include <iostream>
#include <conio.h>
#include <cmath>
using namespace std;
int main()
{
int toothpicks = 23, human, comp;

cout<<"TOOTHPICKS!!!!!" <<endl;
while (toothpicks >0)
{
    cout<<"Human, take your toothpick(s)! But only between 1 and 3 toothpick(s), Thanks! ";
    cin>>human;
    toothpicks = toothpicks - human;
    cout<<toothpicks <<" toothpick(s) remaining" <<endl;
    if (toothpicks = 0)
    {
        cout<<"Human! You have prevailed!"<<endl;
        break;
    }
    if (toothpicks >4)
    {
        comp = 4 - human;   
        cout<<"The computer took " <<comp <<" toothpick(s)" <<endl;
    }
    else if (toothpicks = 2)
    {
        comp = 1;
        cout<<"The computer took " <<comp <<" toothpick(s)" <<endl;
    }
    else if (toothpicks = 3)
    {
        comp = 2;
        cout<<"The computer took " <<comp <<" toothpick(s)" <<endl;
    }
    else if (toothpicks = 4)
    {
        comp = 3;
        cout<<"The computer took " <<comp <<" toothpick(s)" <<endl;
    }
    else if (toothpicks = 1)
    {
        comp = 1;
        cout<<"The computer took " <<comp <<" toothpick(s)" <<endl;
    }
    toothpicks = toothpicks - comp;
    cout<<toothpicks <<" toothpick(s) remaining";
    if (toothpicks = 0)
    {
        cout<<"The computer has prevailed!"<<endl;
        break;
    }
}
_getche();
return 0;