请教这种代码有多少火候才能练出来

//设置位bool CBitManager::SetBit(unsigned int nBitID, bool bBit){    if (!m_pBitBuf || nBitID > m_nMaxBitID)        return false;//    Debug.Trace(0, "EnableId %d = %d \r\n", nBitID, bBit);    if (bBit)        m_pBitBuf[nBitID/BIT_OF_DATA_TYPE]    |= 0x01<<(nBitID % BIT_OF_DATA_TYPE);    else        m_pBitBuf[nBitID/BIT_OF_DATA_TYPE]    &= ~(0x01<<(nBitID % BIT_OF_DATA_TYPE));    return true;}