#include <regex>
#include <string>
#include <iostream>
#include <time.h>
using namespace std;
 
int main()
{
    string data("ABOUTLinkedIn\r\n\r\nwall of textdl.boxcloud.com/this/file/bitbyte.zip sent you a message.\r\n\r\nDate: 12/04/2012\r\n\r\nSubject: RE: Reference Ask\r\n\r\nOn 12/03/12 2:02 PM, wall of text wrote:\r\n--------------------\r\nRuba,\r\n\r\nI am looking for a n.");
    std::regex pattern("(dl\\.boxcloud\\.com|api-content\\.dropbox\\.com)");
    std::smatch result;
 
    while (regex_search(data, result, pattern)) {
	    std::cout << "Match: " << result[0] << std::endl;
 	    std::cout << "Captured text 1: " << result[1] << std::endl;
 	    std::cout << "Size: " << result.size() << std::endl;
       	data = result.suffix().str();
	}
}

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