C++ 关键词(二)之逻辑判断和位运算

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#include  <iostream>
int main(int argc,char * argv[])
{
    bool bResult  = true;

    //逻辑非
    if( not bResult)
    {
        std::cout << "Not bResult IF"<<  std::endl;
    }
    else
    {
        std::cout << "Not bResult ELSE" << std::endl;
    }

    if( !bResult)
    {
        std::cout << "!bResult IF" << std::endl;
    }
    else
    {
        std::cout<<  "!bResult else" << std::endl;
    }

    //不等于
    int x = 2;
    int y = 3;
    if( x not_eq y)
    {
        std::cout << "x not_eq y  IF" << std::endl;
    }
    else
    {
        std::cout << " x not_eq y ELSE" << std::endl;
    }

    if( x != y)
    {
        std::cout << "x != y IF " << std::endl;
    }
    else
    {
        std::cout << " x != y ELSE" << std::endl;
    }

    //按位与
    int lValue = 4;
    int rValue = 3;

    int bitAndValue = lValue bitand rValue;

    int andValue = lValue & rValue;
    std::cout  <<"lValue bitand rValue:   " << bitAndValue<<  std::endl;
    std::cout << "lValue & rValue:   "<<  andValue << std::endl;

    //按位或
    int bitOrValue = lValue bitor rValue;

    int orValue = lValue | rValue;
    std::cout  <<"lValue bitor rValue:   " << bitOrValue << std::endl;
    std::cout << "lValue | rValue:   " << orValue << std::endl;

    //逻辑判断
    bool bTrue = true;
    bool bFalse = false;

    // and  ---  &&  
    if(bTrue and bFalse)
    {
        std::cout << "bTrue and bFalse   IF"  <<std::endl;
    }
    else
    {
        std::cout << "bTrue and bFalse   ELSE"<<  std::endl;
    }

    if(bTrue && bFalse)
    {
        std::cout << "bTrue && bFalse   IF" << std::endl;
    }
    else
    {
        std::cout << "bTrue && bFalse   ELSE" << std::endl;
    }

    // or ----- ||
    if(bTrue or bFalse)
    {
        std::cout << "bTrue or bFalse   IF" << std::endl;
    }
    else
    {
        std::cout << "bTrue or bFalse   ELSE"  <<std::endl;
    }

    if(bTrue || bFalse)
    {
        std::cout  <<"bTrue || bFalse   IF"<<  std::endl;
    }
    else
    {
        std::cout << "bTrue || bFalse   ELSE" << std::endl;
    }

    // xor --- ^
    if( bFalse xor bTrue )
    {
        std::cout << "bFalse xor bTrue    IF" << std::endl;
    }
    else
    {
         std::cout << "bFalse xor bTrue   ELSE" << std::endl;
    }

    if( bFalse ^ bTrue )
    {
        std::cout << "bFalse ^ bTrue    IF"  <<std::endl;
    }
    else
    {
         std::cout << "bFalse ^ bTrue   ELSE" << std::endl;
    }


    int eqValue = 3;
    int rEqValue = 4;

    eqValue xor_eq rEqValue;
    std::cout  <<"eqValue xor_eq rEqValue  " << eqValue << std::endl;

    eqValue = 3;
    eqValue ^= rEqValue;
    std::cout  <<" eqValue ^= rEqValue  " << eqValue  <<std::endl;

    eqValue = 3;
    eqValue or_eq rEqValue;
    std::cout << "eqValue or_eq rEqValue  "  <<eqValue << std::endl;

    eqValue = 3;
    eqValue |= rEqValue;
    std::cout  <<" eqValue |= rEqValue  " << eqValue << std::endl;

    eqValue = 3;
    eqValue and_eq rEqValue;
    std::cout << "eqValue and_eq rEqValue  " << eqValue << std::endl;

    eqValue = 3;
    eqValue &= rEqValue;
    std::cout  <<" eqValue &= rEqValue  " << eqValue << std::endl;
    return 0;
}