Examples of using regex_replacement

CPP_regexps.cpp

#include <iostream>
#include <string>
#include <regex>

using namespace std;

int main () {
  // replace first x => ks
  string str = "Thanx Texas\n";
  cout << str;

  regex x("x");
  string ks = "ks";
  cout << regex_replace (str, x, ks, regex_constants::format_first_only) << endl;


  // replace ed => ing, ph => f
  str = "I was loved, I was trusted, I was losed, I was philled\n";
  cout << str;

  regex ed("ed"), ph("ph");
  string ing = "ing", f = "f";
  str = regex_replace (str, ed, ing);
  cout << regex_replace (str, ph, f) << endl;;

  return 0;
}