猜拳小游戏

#include<stdlib.h>
#include<time.h>
#include<iostream>

using namespace std;

int getIt()
{
    srand((unsigned)time(NULL));
    int n= rand()%3;
    return n;
}
int main()
{
    int a, n, win, lose, draw;
    win=lose=draw=0;
    cout << " /////////////213挑战赛/////////////" <<endl;
    cout << "请输入1－3任意数"<<endl;
    cout << "1 剪子" <<endl;
    cout << "2 石头" <<endl;
    cout << "3 布" <<endl;
    cout << "********************************" <<endl;
    while(cin>>a)
    {
        n=getIt();
        switch(n)
        {
        case 0:
            cout<<"213出了剪子\n";
            break;
        case 1:
            cout<<"213出了石头\n";
            break;
        case 2:
            cout<<"213出了布\n";
            break;
        }
        n++;
        if(a == n)
        {
            cout << "卧槽和213出的一样 " << endl;
            draw++;
        }
        else if( a + 1 == n || (a==3 && n==1))
        {
            cout << "213这渣货赢了" <<endl;
            lose++;
        }
        else
        {
            cout <<"轻松碾压213" <<endl;
            win++;
        }
        cout <<"战况: 赢" << win <<"次; 输: "<< lose <<"次"<< " 平：" << draw << "次"<<endl<<endl;
    }
    return 0;
}