字符串字符顯示與16進制顯示之間的相互轉(zhuǎn)換函數(shù)

字符串字符顯示與16進制顯示之間的相互轉(zhuǎn)換．
    四個有用的函數(shù)：
    //Function to convert unsigned char to string of length 2
    void CXXX::Char2Hex(unsigned char ch, char* szHex)
    {
    unsigned char byte[2];
    byte[0] = ch/16;
    byte[1] = ch%16;
    for(int i=0; i<2; i++)
    {
    if(byte[i] >= 0 && byte[i] <= 9)
    szHex[i] = '0' + byte[i];
    else
    szHex[i] = 'A' + byte[i] - 10;
    }
    szHex[2] = 0;
    }
    //Function to convert string of length 2 to unsigned char
    void CXXX::Hex2Char(char const* szHex, unsigned char& rch)
    {
    rch = 0;
    for(int i=0; i<2; i++)
    {
    if(*(szHex + i) >='0' && *(szHex + i) <= '9')
    rch = (rch << 4) + (*(szHex + i) - '0');
    else if(*(szHex + i) >='A' && *(szHex + i) <= 'F')
    rch = (rch << 4) + (*(szHex + i) - 'A' + 10);
    else
    break;
    }
    }
    //Function to convert string of unsigned chars to string of chars
    void CXXX::CharStr2HexStr(unsigned char const* pucCharStr, char* pszHexStr, int iSize)
    {
    int i;
    char szHex[3];
    pszHexStr[0] = 0;
    for(i=0; i    {
    Char2Hex(pucCharStr[i], szHex);
    strcat(pszHexStr, szHex);
    }
    }
    //Function to convert string of chars to string of unsigned chars
    void CXXX::HexStr2CharStr(char const* pszHexStr, unsigned char* pucCharStr, int iSize)
    {
    int i;
    unsigned char ch;
    for(i=0; i    {
    Hex2Char(pszHexStr+2*i, ch);
    pucCharStr[i] = ch;
    }
    }