txt 2 re
knowing is obsolete :: regular expression generator (perl php python java javascript coldfusion c c++ ruby vb vbscript j# c# c++.net vb.net)
 
 
 
Enter the string that you want to use a regular expression on:
1
   
 
Select the elements that you want to extract to run regular expression generator:
2
0
c 0
d0
8
c 8
d8
08
int08
:
c :
D
c D
wD
e
c e
we
c
c c
wc
varDec
wordDec
monthDec
:
c :
2
c 2
d2
0
c 0
d0
1
c 1
d1
7
c 7
d7
day17
year2017
int2017
ddmmmyyyy08:Dec:2017
_
c _
ws_
"
c "
T
c T
wT
h
c h
wh
i
c i
wi
s
c s
ws
varThis
wordThis
_
c _
ws_
i
c i
wi
s
c s
ws
varis
wordis
_
c _
ws_
a
c a
wa
n
c n
wn
varan
wordan
_
c _
ws_
E
c E
wE
x
c x
wx
a
c a
wa
m
c m
wm
p
c p
wp
l
c l
wl
e
c e
we
varExample
wordExample
!
c !
"
c "
string"This_is_an_Example!"
< Source String
What to click?  extract any integer in this position
extract this integer (2006) in this position
 
3C++ regular expression program that extracts the selected elements from the entered string:
Perl PHP Python Java Javascript ColdFusion C [C++] Ruby VB VBScript J#.net C#.net C++.net VB.net 
 
// URL that generated this code:
// http://txt2re.com/index-c++.php3?s=08:Dec:2017%20%22This%20is%20an%20Example!%22&-13

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

int main()
{
  std::string txt="08:Dec:2017 \"This is an Example!\"";

  std::string re1="(08)";	// Day 1

  PME re(re1,"gims");
  int n;
  if ((n=re.match(txt))>0)
  {
      std::string day1=re[1].c_str();
      std::cout << "("<<day1<<")"<< 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
// 
 
 
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