#include <stdio.h>
void main ()
{
int i,j,sum,t;
int a[5][4]={{78,79,90,67},{60,76,89,63},{86,75,96,56},{54,63,86,96}, {63,96,98,97}};
printf("\n");
for(i=0;i<5;i++)
{
sum=0;
for(j=0;j<4;j++)
sum=sum+a[i][j];
a[i][4]=sum/4;}
for(int k;k<5;k++)
for(i=0;i<5-k;k++)
if(a[i][4]<a[i+1][4])
{t=a[i][j];a[i][j]=a[i+1][j];a[i+1][j]=t;}
for(i=0;i<5;i++)
for(j=0;j<4;j++)
printf("%8d",a[i][j]);
printf("\n");
}
这是我做的,可是我弄不出来,请教各位我哪里做错了,还是写错咯?谢谢了!!