20.找出N*N矩阵中列最大值并输出

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#define N 4
void fun(int(*a)
, int *b)
{
int i, j;
for (i = 0; i < N;i++)
{
b[i] = a[0][i];
for (j = 1;j < N;j++)
if (b[i] < a[j][i]) b[i] = a[j][i];
}
}
int main()
{
int x

= { {12,5,5,7},{6,1,9,3},{1,2,3,4},{2,8,4,3} },y
,i,j;
printf("\nThe matrix :\n");
for (i = 0;i < N;i++)
{
for (j = 0;j < N;j++)
printf("%3d", x[i][j]);
printf("\n");
}
fun(x, y);
printf("\nThe result is:");
for (i = 0;i < N;i++)
printf("%3d", y[i]);
getchar();
return 0;

}