算法之字符串参数解析

 

 分析和思路：循环处理字符串，并更新处理后的字符串

// ParameterParse.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//

#include <iostream>

#include "iostream"
#include <sstream> 
#include <vector>
using namespace std;

int main()
{
    //思路：找到当前的"位置，把之前的字符处理，跳过当前双引号之内的字符，然后继续处理
    string input;
    
    while (getline(cin, input))
    {
        vector<string> result;
        string input_back = input;
        while (input_back.size()> 0)
        {
            int npos = input_back.find_first_of('\"');
            string sub = input_back.substr(0, npos);
        

            stringstream ss(sub);
            string buff;
            while (getline(ss, buff, ' '))
            {
            //    cout << "buff: " << buff << endl;
                result.push_back(buff);
            }
            if (npos != -1)
            {


                input_back = input_back.substr(npos);
            //    cout << "input_back: " << input_back << endl;
                
            }
            else
            {
                break;
            }
            int npos2 = input_back.find_first_of('\"');
            if (npos2 != -1)
            {
                string temp;
                int i = 0;
                for (i = npos2 + 1; input_back[i] != '\"'; i++)
                {
                    temp.append(1, input_back[i]);
                }
                result.push_back(temp);
            //    cout << "temp: " << temp << endl;
                input_back = input_back.substr(npos2 + i + 1);
            //    cout << "input_back: " << input_back << endl;

            }
        
        
        
            
            int a = 10;
        }
        int count = 0;
        for (int i = 0; i < result.size(); i++)
        {
            if (result[i].size() != 0)
                count++;
        }
        cout << count << endl;
        for (int i = 0; i < result.size(); i++)
        {
            if (result[i].size() != 0)
                cout << result[i] << endl;
        }
        
    }

    return 0;
}