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[][];

double c[];

int main()

{

    int n;

    int m;

    char d;

    while (scanf_s("%d%d%c", &n, &m, &d) != EOF)

    {

        for (int i = ; i<n; i++)

        {

            for (int j = ; j<m; j++)

            {

                int b;

                scanf_s("%d", &b);

                a[i][j] = b;

            }

        }

        for (int i = ; i<n; i++)

        {

            double sum = ;

            double avge;

            for (int j = ; j<m; j++)

            {

                sum = sum + a[i][j];

            }

            avge = sum*1.0 / m;

            printf("%0.2lf", avge);

            if (i<n - )

                printf(" ");

        }

        printf("\n");

        for (int j = ; j<m; j++)

        {

            double sum = ;

            double avge;

            for (int i = ; i<n; i++)

            {

                sum = sum + a[i][j];

            }

            avge = sum*1.0 / n;

            c[j] = avge;

            printf("%0.2lf", avge);

            if (j<m - )

                printf(" ");

        }

        printf("\n");

        int count = ;

        for (int i = ; i<n; i++)

        {

            int count1 = ;

            for (int j = ; j<m; j++)

            {

                if (a[i][j] >= c[j])

                    count1++;

            }

            if (count1 == m)

                count++;

        }

        printf("%d\n\n", count);

    }

}