#include<stdio.h>
main()
{
    int n,m,i,j,k[51][6],g,frag,f,h;
    float sum1[51],ave1[51],sum2[51],ave2[51];
    while(scanf("%d%d",&n,&m)!=EOF)
    {
        
        frag=1;
        g=0;
        for(i=1;i<=n;i++)
        {
            for(j=1;j<=m;j++)
            {
                scanf("%d",&k[i][j]);
            }
        }
        for(i=1;i<=n;i++)
        {
            sum1[i]=0;
            for(j=1;j<=m;j++)
            {
                sum1[i]=sum1[i]+k[i][j];
            }
            ave1[i]=sum1[i]/m;
            printf("%.2f ",ave1[i]);
        }
        printf("\n");
        for(j=1;j<=m;j++)
        {
            sum2[j]=0;
            for(i=1;i<=n;i++)
            {
                sum2[j]=sum2[j]+k[i][j];
            }
            ave2[j]=sum2[j]/n;
            printf("%.2f ",ave2[j]);
        }
        printf("\n");
        for(f=1;f<=n;f++)
        {
            for(h=1;h<=m;h++)
            {
                if(k[f][h]<ave2[h])
                frag=0;
            }
            if(frag)
            g++;
        }
        printf("%d\n",g);
        printf("\n");
    }
}


帮忙看看，为什么那个g一直不变

for(f=1;f<=n;f++)
         {
             for(h=1;h<=m;h++)
             {
                 if(k[f][h]<ave2[h])
                  /*if语句成立，执行该代码，但是，你把frag赋值为0，在下一次循环之前，应该将frag的值重新赋值为1，否则它的值仍然为0，导致下面的if语句永远不能被执行*/
                 frag=0;
             }
              //下面的语句没有执行，说明frag的值始终为0
             if(frag)
             g++;
         }