题解 | #参数解析#

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

int main() {
    string input;
    vector<string> v;
    vector<string> temp;
    bool on = false;
    while (cin >> input) {
        if (input[0] == '"' && input[input.size() - 1] == '"') {
            input = input.substr(1, input.size() - 2);
            v.push_back(input);
        } else {
            if (on) {
                if (input[input.size() - 1] == '"') {
                    on = false;
                    input = input.substr(0, input.size() - 1);
                    temp.push_back(input);
                    string str;
                    for (auto& i : temp) {
                        str += i;
                        str += " ";
                    }
                    v.push_back(str);
                } else {
                    temp.push_back(input);
                }
            } else {
                if (input[0] == '"') {
                    on = true;
                    input = input.substr(1, input.size() - 1);
                    temp.push_back(input);
                } else {
                    v.push_back(input);
                }
            }
        }
    }
    cout << v.size() << endl;
    for (auto& i : v) {
        cout << i << endl;
    }
}