Decode URLs in C++Code:std::string urlDecode(std::string &eString) { std::string ret; char ch; int i, j; for (i=0; i<eString.length(); i++) { if (int(eString[i])==37) { sscanf(eString.substr(i+1,2).c_str(), "%x", &j); ch=static_cast<char>(j); ret+=ch; i=i+2; } else { ret+=eString[i]; } } return (ret); }