Int to String - manipulating string

[mickey]

Hello, I have to wirte this method and I'd like one efficent and compact:

int _low, _high;
std::string MyClass:: print() { 		
		std::string str;
		std::string result;
		std::stringstream ss; 
 
		result += "[";		
		ss << _low;
		ss >> str;
		result += str;
 
		result.append("-");
 
		ss << _high;
		ss >> str;
		result += str;
		result.append("]");		
		return result; 
	}
//main
MyClass mycl;
cout << " The range is: " << mycl.print() << endl

int _low, _high;
std::string MyClass:: print() { 		
		std::string str;
		std::string result;
		std::stringstream ss; 

		result += "[";		
		ss << _low;
		ss >> str;
		result += str;
		
		result.append("-");
		
		ss << _high;
		ss >> str;
		result += str;
		result.append("]");		
		return result; 
	}
//main
MyClass mycl;
cout << " The range is: " << mycl.print() << endl

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it must print: "the range is [10-20]"

It seems too large and not compact.... How can I improve?
Thanks.