#include <iostream>
#include <sstream>
int main() {
int i = 123;
std::string temp;
std::stringstream ss;
ss << std::hex << i;
ss >> temp;
std::cout << temp << std::endl;
return 0;
}
c++ int to hex string
原文：http://my.oschina.net/lovelyBoy/blog/330048
