demo_3_23

void Avg(int score[][5], int n)
{
    double sum = 0;
    for (int i = 0; i < 4; i++)
    {
        sum += *(*(score + i) + 0);
    }
    printf("第一门课程的平均分:%f\n", sum);
    return;
}
void Fail(int score[][5], int n)
{
    for (int i = 0; i < n; i++)
    {
        int fail_count = 0, sum = 0;
        for (int j = 0; j < 5; j++)
        {
            if (*(*(score + i) + j) < 60)
            {
                fail_count++;
            }
        }
        if (fail_count <= 2) continue;
        printf("学号 = %d ", i + 1);
        for (int j = 0; j < 5; j++)
        {
            sum += *(*(score + i) + j);
            printf("%d ", *(*(score + i) + j));
        }
        printf("平均分:%f\n", sum / 5.0);
    }
    return;
}
void Exe(int score[][5], int n)
{
    //找出平均分在90分以上或所有成绩在85分以上
    for (int i = 0; i < n; i++)
    {
        float sum = 0;
        int count = 0;
        for (int j = 0; j < 5; j++)
        {
            if (*(*(score + i) + j)>85)
            {
                count++;
            }
            sum += *(*(score + i) + j);
        }
        if (count == 5 || sum / 5 > 90)
        {
            for (int j = 0; j < 5; j++)
            {
                printf("%d ", *(*score + i) + j);
            }
            printf("\n");
        }
    }
    return;
}
int main()
{
    printf("请输入四个学生的五门课程成绩:");
    int score[4][5];
    for (int i = 0; i < 4; i++)
    {
        scanf("%d %d %d %d %d", *(score + i) + 0, *(score + i) + 1, *(score + i) + 2, *(score + i) + 3, *(score + i) + 4);
    }
    Avg(score, 4);
    Fail(score, 4);
    Exe(score, 4);
    system("pause");
    return 0;
}