直接上代码：

#include <iostream>
using namespace std;
const int Max=5;
int main()
{
     int golf[Max];
    cout<<"Max="<<Max<<endl;

    int i;
    for(i=0;i<Max;i++)
    {
        cout<<"round #"<<i+1<<":";
        while(!(cin>>golf[i]))  //如输入失败进入while循环，成功不进入循环
        {
            cin.clear();          //重置输入，如省略，程序将拒绝读取输入
            while(cin.get()!='\n')
                continue;       //读取掉行尾之前的所有输入，从而删除这一行的错误输入
                cout<<"Please enter a number: ";
        }
    }

    double total=0.0;
    for(i=0;i<Max;i++)
        total+=golf[i];

    cout<<total/Max<<" = average score "<<Max<<" rounds\n";
    return 0;
}