练习32

#include <iostream>
#include <string>
using namespace std;


#define N 8


float grades[N];//存放成绩的数组


int main()
{
int i;
float total,average;

//提示输入成绩
for(i = 0; i < N; i++ )
{
cout << "Enter grade #" <<(i +1) << ": ";
cin >> grades[i];
}

total = 0;
for (i = 0; i < N; i++)
total += grades[i];
average = total / N;
cout << "\nAverage grade: " << average << endl;
return 0;
}