题解 | #n的阶乘#
n的阶乘
https://www.nowcoder.com/practice/97be22ee50b14cccad2787998ca628c8
#include <stdio.h>
long int factorial(int n){
long int res=1;
for(int i=n;i>=1;i--) res *=i;
return res;
}
int main(){
int n;
while (scanf("%d",&n)==1) printf("%ld\n",factorial(n));
return 0;
}
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