c++字符数字转换(103)

#include <string>
#include <sstream>
using namespace std;
 
void ()
{
    stringstream ss;
    
    int n;
    ss << "325";
    ss >> n;
    cout << n << endl;
    ss.clear();
    //数值转换成字符串
    string str;
    ss << 888;
    ss >> str;
    cout << str << endl;
    ss.clear();
    str.empty();
    //数值转换成16进制表示的字符串
    ss << hex << 255;
    ss >> str;
    cout << str << endl;
    ss.clear();
    n = 0;
    //16进制表示的字符串转换为数值
    ss << "FFA";
    ss >> n;
    cout << n << endl;
}