How do I get PCRE to work with C++?

Question

This is a newbie question but I hope I can express my question as clearly as possible.

I'm trying to do pattern matching in C++.

I've downloaded the Win32 version of PCRE from here and I've placed the downloaded pcre3.dll and pcreposix3.dll files into the folder of Dev-CPP's lib folder (I'm using Bloodshed Dev-C++ 4.9.9 IDE).

I've also downloaded a pcrecpp.h header file and have it in the same directory I'm writing the following code (not writing actually. I'm coping example code from a PDF tutorial named PCRE- Perl Compatible Regular Express).

But I can't get it to work. The code is as follows:

    #include <iostream>
    #include <string>
    #include <pcrecpp.h>

    using namespace std;


    int main()
    {
       int i;
       string s;
       pcrecpp::RE re("(\\w+):(\\d+)");
       if (re.error().length() > 0) {
          cout << “PCRE compilation failed with error: “ << re.error() << “\n”;
       }
       if (re.PartialMatch("root:1234", &s, &i))
       cout << s << " : " << i << "\n";
    }

When I compile the code, Dev-C++ gives me a lot of errors including: "`pcrecpp' has not been declared" and 'RE' undeclared.

How should I deal with the downloaded files and fix my problem? Or is there something obvious that I'm missing?

Thanks for any guidance :)

Answer 1

You have included

#include <pcrecpp.h> 

1st point to check But is file in the inlcude path of your code. Did you download the installable ? Check where it has been installed on your machine.

2nd point is to check do you have the library paths defined, so that they can be resolved during compiling and linking.