piece of code: Decode urls in c++

[pocode]

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);
}

Decode URLs in C++

[Salem]

Do you have a question, or are you seeking comments on your code?
Or is this just "hey, visit my site"?

> if (int(eString[i])==37)
How about replacing 37 with '%'

> sscanf(eString.substr(i+1,2).c_str(), "%x", &j);
How about looking up what stringstreams can do for you.