c - 逻辑哪里错了？

Question

我编写了一个memoized代码，用于在 C 中计算数字的阶乘。但是当输入为 n=3 时，它的输出为 6! = 134513904 。有人可以解释一下出了什么问题吗？

int fact(int n)
{
int temp;
static int lookup_table[100];
if(lookup_table[n])
    return lookup_table[n]; 
else if(n == 0 )
{
    lookup_table[0]= 1;
    return 1;
}   
else
{
    temp = n * fact(n-1);
    lookup_table[n] = temp;
    return temp;
}

}

Answer 1

一个问题可能是您从未初始化表，因此它填充了内存中的任何内容。

编辑:啊，看来我错了，而且行为定义良好:

If an object that has static storage duration is not initialized explicitly, it is initialized implicitly as if every member that has arithmetic type were assigned 0 and every member that has pointer type were assigned a null pointer constant.

Source