求助！

回帖必关！

蒟蒻不会做啊！

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

int main() {
	char a;
	string s;
	cin >> s;
	for (long long i = 0; i < s.length(); i++) {
		if (s[i] >= 'a' && s[i] <= 'z') {
			a = char(int(s[i] + 32));
			cout << a;
			continue;
		}
		cout << s[i];
	}
	return 0;
}