输入整形变量n,求1到n之间的所有数相乘之和

Question

Answer 1

#include <stdio.h>

int main(){
    int i, n,res = 1;
    scanf("%d",&n);
    for(i = 1;i <= n;i++){
        res *= i;
    }
    printf("%d",res);
    return 0;
}