Open a URL from C++ Program

/*
  ** Open a URL from C++ Program - multiplatform
  ** Abrir uma url a partir de um programa em c++ (console application)
  ** Tested in linux and windows
*/

#include <fstream>    //Read and write from a file
#include <string.h>   //strlen
#include <iostream>
using namespace std;

bool openFile(ifstream &ifs, const std::string& name);
bool checkFileError(string pathFileErrLog);
bool openUrl(string url);
void checkPlatform();

int main() {
  bool r;
  string myUrl = "http://www.travele.com.br";
  checkPlatform();

  cout << "Opening " << myUrl;
  r = openUrl(myUrl);
  if(r)
    cout << ": Success";
  else
    cout << ": Error";

  return 0;
}

// Open a file by path and check the success of the operation
bool openFile(ifstream &ifs, const std::string& name) {
  ifs.open(name.c_str());
  return ifs.is_open();
}

//Check error in the command execution
bool checkFileError(string pathFileErrLog) {
  ifstream file;
  string line;
  openFile(file, pathFileErrLog);
  getline(file, line);
  //cout << "\nline: " << line;
  file.close();
  if(strlen(line.c_str()) > 0)
    return false;
  return true;
}

//Open an url in the browser
bool openUrl(string url) {
  string pathFileErrLog = "./cmd_err.log", cmd;
  string arrCmd[] = {"CmdErrorTEST", "start", "google-chrome", "firefox"};  //enything else ? put here
  for(int i=0; i<sizeof(arrCmd)/sizeof(arrCmd[0]); i++) {
    cmd = arrCmd[i];
    cmd.append(" "); cmd.append(url); cmd.append(" 2>"); cmd.append(pathFileErrLog);
    system(cmd.c_str());
    if(checkFileError(pathFileErrLog))
      return true;
  }
  return false;
}

//Check platform where we are in
void checkPlatform() {
  #ifdef __linux__
    cout << "we're in a linux platform, beautiful!\n\n";
  #else
    cout << "Are you walking in the dark side ?\n\n";
    //Windows fans don't stay angry with me, okay? It is just a joke.
  #endif
}