CPP_Regex_05.cpp

#include<iostream>
#include<string>
#include<vector>
#include<regex>
using namespace std;

//regex_replace 
int main() {
	string str = "zhangxm01@gmail.com; zhan@163.com; zhan_j@yahoo.com";
    regex e("([[:w:]]+)@([[:w:]]+)\.com");
    //$1 and $2 represents the group 1 and group 2 in the regex
    cout <<regex_replace(str, e, "$1 is on $2") << endl;;
    //We can add more flags in the regex_replace function
	cout << regex_replace(str, e, "$1 is on $2", regex_constants::format_no_copy|regex_constants::format_first_only);
	cout<< endl;

	system("pause");
	return 0;
}