#include<stdio.h>
int main()
{
int fac(int n);
int n,y;
scanf("%d",&n);
y=fac(n);
printf("%d",y);
return 0;
}
int fac(int n)
{
int f;
if(n<0)
printf("data error");
else if(n==0||n==1)
f=1;
else
f=fac(n-1)*n;
return f;
}
用递归求n!
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转载自blog.csdn.net/zhangxue1232/article/details/104842002
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