If statement

[Slashdash]

Greetings. I'm having a problem with an if statement, and I was wondering if you could help me out.

if ( xTest + 11 == 11 && yTest == 4 || yTest == 6 || yTest == 8)

{
cout << "nice"
}

It seems to execute the right part even though that the xTest + 11 doesn't equal 11, how come?

[shadowmouse]

I think this is a parenthesis problem as it evaluates left to right so if xTest = 1 and yTest = 6,

if(xTest+11 == 11 //false
   && yTest == 4 //false
   || yTest == 6 //true
   || yTest == 8) //false 

is the same as

if(false && false || true || false)

which evaluates to

if(false||true||false)

which evaluates to

if(true||false)

which evaluates to

if(true)

[jlb]

You need to be careful when you mix the && and || operations. I suggest you use parentheses to insure the logic is evaluated like you think it should be.

[Slashdash]

Alright, I think I get it. So how do I make it so that if the first part of the if statement (xTest + 11 == 11) is false then ignore the rest?

[shadowmouse]

if(xTest==0 && (yTest==4||yTest==6||yTest==8))