#include<stdio.h>
#define N 3
void fun(int a[][N],int m)
{
int i, j;
for (i = 0; i < N; i++)
for (j = 0; j <= i; j++)
a[j][i] = a[j][i] * m;
}
int main()
{
int i, j;
int a[N][N];
printf("input a number: \n");
for(i=0;i<N;i++)
for (j = 0; j < N; j++)
scanf_s("%d", &a[i][j]);
printf("3 * 3 matrix: \n");
for (i = 0; i < N; i++)
{
for (j = 0; j < N; j++)
printf("%3d", a[i][j]);
printf("\n");
}
printf("change 3 * 3 matrix: \n");
fun(a, 2);
for (i = 0; i < N; i++)
{
for (j = 0; j < N; j++)
printf("%3d", a[i][j]);
printf("\n");
}
return 0;
}
那是C语言???怎么写啊