average.cpp

来自「C++ sample code, for the book: C++ blac」· C++ 代码 · 共 19 行

#include <iostream>
using namespace std;

int main()
{
    double grades[] = {88, 99, 73, 56, 87, 64};
    double sum, average;

    sum = 0;

    for (int loop_index = 0; loop_index < sizeof(grades) / sizeof (double);   
        loop_index++) {
        sum += grades[loop_index];
    }

    average = sum / (sizeof(grades) / sizeof (double));

    cout << "Average grade = " << average << endl;
}