求平均成绩（hdu2023）

注意：要心细，不要错在小细节上。如int c[6];double agve; c[j]=agve；这是错误的。

#include<stdio.h>
#include<cmath>
int a[51][6];
double c[6];
int main()
{
    int n;
    int m;
    char d;
    while (scanf_s("%d%d%c", &n, &m, &d) != EOF)
    {
        for (int i = 0; i<n; i++)
        {
            for (int j = 0; j<m; j++)
            {
                int b;
                scanf_s("%d", &b);
                a[i][j] = b;
            }
        }
        for (int i = 0; i<n; i++)
        {
            double sum = 0;
            double avge;
            for (int j = 0; j<m; j++)
            {
                sum = sum + a[i][j];
            }
            avge = sum*1.0 / m;
            printf("%0.2lf", avge);
            if (i<n - 1)
                printf(" ");
        }
        printf("\n");
        for (int j = 0; j<m; j++)
        {
            double sum = 0;
            double avge;
            for (int i = 0; i<n; i++)
            {
                sum = sum + a[i][j];
            }
            avge = sum*1.0 / n;
            c[j] = avge;
            printf("%0.2lf", avge);
            if (j<m - 1)
                printf(" ");
        }
        printf("\n");
        int count = 0;
        for (int i = 0; i<n; i++)
        {
            int count1 = 0;
            for (int j = 0; j<m; j++)
            {
                if (a[i][j] >= c[j])
                    count1++;
            }
            if (count1 == m)
                count++;
        }
        printf("%d\n\n", count);
    }
}