有以下程序

#include <stdio.h>

#define N 4

void fun(int a[][N], int b[])

{ int i;

for(i=0;i<N;i++) b[i] = a[i][i];

}

main()

{ int x[][N]={{1,2,3},{4},{5,6,7,8},{9,10}},y[N],i;

fun(x,y);

for(i=0;i<N;i++) printf("%d,",y[i]);

printf("\n");

}

程序的运行结果是

A)1,2,3,4,

B)1,0,7,0,

C)1,4,5,9,

D)3,4,8,10,