求1+2+3+...

俞添 LV 6 @ 2025-8-1 18:56:00

#include<bits/stdc++.h>

using namespace std;

int sum(int n) {

if (n == 1) { 

return 1; 

} 

return n + sum(n - 1);

}

int main() {

int n; 

cin >> n; 

cout << sum(n) << endl; 

return 0;

}

1
🗡🗡��Manfred▄︻┻┳═一 (高俊逸) LV 6 @ 2025-6-16 20:58:20

#include<bits/stdc++.h> using namespace std; int sum(int n) { if (n == 1) { return 1; } return n + sum(n - 1); } int main() { int n; cin >> n; cout << sum(n) << endl; return 0; }