// URL that generated this code:
// http://txt2re.com/index-c++.php3?s=42%2043&2&-5&-8&-1

#include <stdlib.h>
#include <string>
#include <iostream>
#include <pme.h>

int main()
{
  std::string txt="42 43";

  std::string re1="(42)";	// Integer Number 1
  std::string re2="( )";	// White Space 1
  std::string re3="(\\d+)";	// Integer Number 2

  PME re(re1+re2+re3,"gims");
  int n;
  if ((n=re.match(txt))>0)
  {
      std::string int1=re[1].c_str();
      std::string ws1=re[2].c_str();
      std::string int2=re[3].c_str();
      std::cout << "("<<int1<<")"<<"("<<ws1<<")"<<"("<<int2<<")"<< std::endl;
  }
}

//-----
// C++ does not provide a regular expression feature as standard.
//
// To run this code you will need to first download and install
// the PCRE library from http://www.pcre.org/ and 
// the PME library from ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/Contrib/
// 
// Note that on Linux systems PCRE is often already installed in /usr/lib/libpcre* or /usr/local/lib/libpcre*. 
//
// Compile and run on Unix using 
// # c++ x.cpp -lpme -lpcre 
// # ./a.out
//