题解 | #句子逆序#

#include <iostream>
#include <string>
using namespace std;

int main() {
    string s;
    getline(cin, s);
    string word;
    string ans;
    for (int i = s.size() - 1; i >= 0; i--) {
        if (s[i] == ' ') {
            ans  = ans + word + " ";
            word.clear();
        } else {
            word = s[i] + word;
        }
    }
    ans  = ans + word;
    cout << ans;
}
// 64 位输出请用 printf("%lld")