runoob_05_sstream

/*
 * @Author: by777
 * @Date: 2025-03-21 17:01:06
 * @LastEditors: by777
 * @LastEditTime: 2025-03-21 17:13:15
 * @FilePath: /cxx_stl/runoob_05.cpp
 * @Description: https://www.runoob.com/cplusplus/cpp-libs-sstream.html
 * 
 * Copyright (c) 2025 by by777, All Rights Reserved. 
 */
#include <iostream>
#include <sstream>
using namespace std;
int main(int argc, const char** argv) {
    cout<<"sstream提供了方便的方式处理字符串流"<<endl;
    string data = "10 20.5";
    // istringstream用于从字符串中读取数据
    // ostringstream将数据写入字符串
    // stringstream二者组合，可同时写和读

    std::istringstream iss(data);

    int i;
    double d;
    iss>>i>>d;
    cout<<"Inter: "<<i<<endl;
    cout<<"Float: "<<d<<endl;


    std::ostringstream oss;
    i=100;
    d=200.5;
    oss<<i<<" "<<d;
    string result = oss.str();
    cout<<"result: "<<result<<endl;

    data = "30 40.555";
    std::stringstream ss(data);
    // 从stringstream中读取数据
    ss>>i>>d;
    cout<<"Read integer: "<<i<<", Double: "<<d<<endl;

    // 向stringstream中写入数据
    ss.str("55 60.7"); // 清空stringstream
    // ss<<"New data: "<<50<<" "<<60.7;

    string newData=ss.str();
    cout<<"newData: "<<newData<<endl;


    return 0;
}