函数char2Hex() socketref,再见！高德 C++博客

函数char2Hex() - socketref,再见！高德 - C++博客

函数char2Hex()

string Char2Hex(char a)
{
    string str = "";
    int n = a;
    for (int i=2*sizeof(char) - 1; i>=0; i--)
    {
        str += "0123456789ABCDEF"[((n >> i*4) & 0xF)];
    }
    return str;
}