题解 | #单词替换#

//直接将句子分割成一个个单词
//然后将每个单词与待替换单词匹配
//若不相同直接输出单词，否则输出替换后单词

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

int main() {
    string str, str1, str2;
    char c;
    vector<string>data;
    while ((cin >> str).get(c)) {
        data.push_back(str);
        if (c == '\n') {          //检测到回车后结束输入
            break;
        }
    }
    cin >> str1 >> str2;
    for (auto iter = data.begin(); iter != data.end(); iter++) {
        if (*iter != str1) {
            cout << *iter << " ";
        } else {
            cout << str2 << " ";
        }
    }
    return 0;
}