A simple portable C++ ping using popen

ping.cpp

// C++ Libraries
#include <cstdio>
#include <iostream>
#include <sstream>
#include <string>


template <typename TP> std::string Num2Str(TP const& value ){
    std::stringstream sin;
    sin << value;
    return sin.str();
}

bool Ping( const std::string& address, const int& max_attempts )
{
    // Format a command string
    // Maybe need to sanitize command?
    #ifdef _WIN32
        std::string command = "ping -n " + Num2Str(max_attempts) + " " + address;
    #else
        std::string command = "ping -c " + Num2Str(max_attempts) + " " + address;
    #endif

    std::stringstream sout;

    FILE *in;
    char buff[512];

    // Open ping read-only
    #ifdef _WIN32
        if(!(in = _popen(command.c_str(), "r"))){
    #else
        if(!(in = popen(command.c_str(), "r"))){
    #endif
        return true;
    }

    // Get output
    while(fgets(buff, sizeof(buff), in) != nullptr){
        sout << buff;
    }

    // Close
    int exit_code = pclose(in);

    return exit_code;
}


int main( int argc, char* argv[] )
{

    std::string host = "www.google.com";
    int max_attempts = 3;
    
    // Execute the command
    bool result = Ping( host, max_attempts);


    std::cout << host << " ";
    if(!result){
        std::cout << " is responding." << std::endl;
    }
    else{
        std::cout << " is not responding.";
    }

    return 0;
}