#include<stdio.h>
void student(int b[5][3],int n)
{
    int i,j,max,min;
    int s;
    max=b[0][0];
    min=b[0][0];
    s=0;
    n=5;
    for(i=0;i<5;i++)
    {
        for(j=0;j<3;j++)
        {
            if(max<b[i][j])
            {
                max=b[i][j];
            }
            printf("第%d个学生的最高成绩是:%d",i,max);
            if(min>b[i][j])
            {
                min=b[i][j];
            }
            printf("第%d个学生的最低成绩是:%d",i,min);
            s+=b[i][j];
            s=s/n;
            printf("第%d个学生的平均成绩是:%d",i,s);
        }
    }
}
void kecheng(int a[3][5],int n)
{
    int i,j,max,min;
    int s;
    max=a[0][0];
    min=a[0][0];
    s=0;
    n=3;
    for(i=0;i<3;i++)
    {
        for(j=0;j<5;j++)
        {
            if(max<a[i][j])
            {
                max=a[i][j];
            }
            printf("第%d个门课的最高成绩是:%d",i,max);
            if(min>a[i][j])
            {
                min=a[i][j];
            }
            printf("第%d个门课的最低成绩是:%d",i,min);
            s+=a[i][j];
            s=s/n;
            printf("第%d个门课的平均成绩是:%d",i,s);
        }
    }
}
main()
{
    int a[3][5]={{50,60,70,80,90},{50,60,70,80,90},{50,60,70,80,90}};
    int b[5][3],i,j,temp[3];
    int x=3;
    int y=5;

    for(i=0;i<3;i++)
    {
        for(j=0;j<5;j++)
        {
        //  scanf("%d",&a[i][j]);
            b[j][i] = a[i][j];
        }
    }
    kecheng(b,x);
    student(a,y);
}
求改正    编译成功   运行不对！！！！！！谢谢