#include <iostream>
#include <cstdlib>

using namespace std;

int main(int argc, char const *argv[])
{

    int score[5][4] = {
        {56, 75, 78, 89},
        {89, 98, 76, 67},
        {88, 88, 77, 66},
        {67, 78, 89, 90},
        {98, 97, 96, 95}};

    float avg1 = 0.0f;
    float avg2 = 0.0f;
    float avg3 = 0.0f;
    float avg4 = 0.0f;
    // 计算物理学科平均
    for (int i = 0; i < 5; i++)
    {
        avg1 += score[i][0] / 5.0;
        avg2 += score[i][1] / 5.0;
        avg3 += score[i][2] / 5.0;
        avg4 += score[i][3] / 5.0;
    }
    cout << "语文的平均成绩： " << avg1 << endl;
    cout << "数学的平均成绩： " << avg2 << endl;
    cout << "化学的平均成绩： " << avg3 << endl;
    cout << "物理的平均成绩： " << avg4 << endl;
    return 0;
}
