linux to_string

std::string to_string(int val);
std::string to_string(long val);
std::string to_string(long long val);
std::string to_string(unsigned val);
std::string to_string(unsigned long val);
std::string to_string(unsigned long long val);
std::string to_string(float val);
std::string to_string(double val);
std::string to_string(long double val);

#include <iostream>
#include <string>

int main() {
    int num_int = 123;
    double num_double = 123.456;

    std::string str_int = std::to_string(num_int);
    std::string str_double = std::to_string(num_double);

    std::cout << "Integer as string: " << str_int << std::endl;
    std::cout << "Double as string: " << str_double << std::endl;

    return 0;
}

#include <iostream>
#include <sstream>
#include <iomanip>
#include <string>

int main() {
    double num = 123.456789;
    std::ostringstream oss;
    oss << std::fixed << std::setprecision(6) << num;
    std::string str = oss.str();
    std::cout << "Formatted double as string: " << str << std::endl;
    return 0;
}