程序代码：

#include<stdio.h>
int fact()
{
    static int i=5;
    printf("%d\n",i);
    if(i==0)return 1;
    else
    {
        i--;
        printf("%d\n",i);
        return(i+1)*fact();
    }
}
void main()
{
    printf("fact=%d\n",fact());
}