#include<stdio.h> |
int N( int x) //递归 |
{ |
if (x==1) |
return x; |
else |
return x*N(x-1); |
} |
int main() |
{ |
int x,n; |
printf ( "please input x:\n" ); |
scanf ( "%d" ,&x); |
n=N(x); |
printf ( "x!=%d" ,n); |
return 0; |
} |