题解 | #单词替换#

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

int main() {
    string original, target,
           replacement; //原始字符串、目标单词和替换单词
    getline(cin, original);
    getline(cin, target);
    getline(cin, replacement);

    //替换字符串中的指定单词
    vector<string> words;
    stringstream ss(original);//使用stringstream分割字符串为单词
    string word;
    while (ss >> word) {
        if (word == target) {
            words.push_back(
                replacement);//如果当前单词与目标单词相同，替换为替换单词
        } else {
            words.push_back(word);//否则保留原单词
        }
    }

    //输出替换后的结果
    for (auto iter = words.begin(); iter != words.end(); iter++) {
        cout << *iter << " ";
    }
}