C++中std::stringstream多类型数据拼接和提取用法小结

#include <iostream>
#include <sstream>
#include <string>
int main() 
{
    int intValue = 42;
    double doubleValue = 3.14159;
    std::string stringValue = "Hello, world!";
    std::stringstream ss;
    ss << "Int: " << intValue << ", Double: " << doubleValue << ", String: " << stringValue;
    std::string result = ss.str();
    std::cout << result << std::endl; 
    // 输出 "Int: 42, Double: 3.14159, String: Hello, world!"
    return 0;
}

#include <iostream>
#include <sstream>
#include <string>
int main() {
    std::string data = "42 3.14159 Hello";
    int intValue;
    double doubleValue;
    std::string stringValue;
    std::stringstream ss(data);	
    ss >> intValue >> doubleValue >> stringValue;
    std::cout << "Integer Value: " << intValue << std::endl;
    std::cout << "Double Value: " << doubleValue << std::endl;
    std::cout << "String Value: " << stringValue << std::endl;
    return 0;
}