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#include <iostream>
#include <string>
#include <regex>
using namespace std;
int main() {
string s("Colour, colours, color, colourize");
regex reg("(Colo)(u)(r)");
string t=regex_replace(s,reg,string("$1\\x31$3"));
cout << t << endl;
regex reg1("\\\\x31");
cout << regex_replace(t,reg1,string("1")) << endl;
return 0;
}
//Colo\x31r, colours, color, colourize
//Colo1r, colours, color, colourize
//
#include <iostream>
#include <string>
#include <regex>
using namespace std;
int main() {
string s("Colour, colours, color, colourize");
regex reg("(Colo)(u)(r)");
string t=regex_replace(s,reg,string("$011$3"));
cout << t << endl;
return 0;
}
//Colo1r, colours, color, colourize
//