22 lines
220 B
C++
22 lines
220 B
C++
#include<iostream>
|
|
using namespace std;
|
|
|
|
int x(int n){
|
|
|
|
int y=1;
|
|
for(int i=1;i<=n;i++)
|
|
y=y*i;
|
|
return y;
|
|
|
|
}
|
|
|
|
int main(){
|
|
int a,b=1;
|
|
cout<<"请输入一个整数:";
|
|
cin>>a;
|
|
|
|
b=x(a);
|
|
cout<<b<<endl;
|
|
return 0;
|
|
}
|