c语言pat基础题0902L1080

Question

我的代码出现问题，本题希望可以得到大家的指导，谢谢你的帮助！

Answer 1

供参考：

#include <stdio.h>
int main()
{
    int a1 = 0,a2 = 0,n = 0,k = 0,cnt = 2,arr[10006] = {0},a3;
    scanf("%d%d%d",&a1,&a2,&n);
    if(n == 0)  return 0;
    arr[k++] = a1;//数组前两个数
    arr[k++] = a2;
    while(k <= n)
    {
        a3 = a1 * a2;
        if(a3 > 9){
            arr[k++] = a3 / 10;
            arr[k++] = a3 % 10;
        }
        else
            arr[k++] = a3;
        a1 = a2;  //为下一次计算做准备
        a2 = arr[cnt++];
    }
    for(int i = 0;i < n; i++)
        printf(i ? " %d" : "%d", arr[i]);
    return 0;
}