有以下程序
#include
#define N 4
void fun(int a[][N])
{ int b[N][N],i,j;
for(i=0; ifor(j=0; jb[i][j] = a[N-1-j][i];
for(i=0; ifor(j=0; ja[i][j] = b[i][j];
}
main()
{ int x[N][N]={ {1, 2, 3, 4},
{5, 6, 7, 8},
{9,10,11,12},
{13,14,15,16}
}, i;
fun(x); fun(x);
for (i=0;iprintf("%d,", x[i][i]);
printf("\n");
}
程序的运行结果是______。