【入门】编程求1*2*3*...*n

3
黄腾钰xz LV 5 @ 2026-5-30 10:27:02

#include using namespace std;

int main() { int a, b = 1; cin >> a; for (int i = 1; i <= a; i++) { b = b * i; } cout << b; return 0; }
2
张学境2026dly LV 6 @ 2026-5-31 8:44:55

#include <bits/stdc++.h> using namespace std;

int main() { int a, num = 1; cin >> a; for (int i = 1; i <= a; i++) { num = num * i; } cout << num; return 0; }
1
胡胤汐ly LV 3 @ 2026-5-30 17:26:45

#include <bits/stdc++.h> using namespace std;

int main() { int a, b = 1; cin >> a; for (int i = 1; i <= a; i++) { b = b * i; } cout << b; return 0; }