A syntax question - Dev Articles

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November 18th, 2004, 04:40 PM

TriSwords

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A syntax question

I am doing a Computer Science 2 AP packet and I ran across something I have never seen before.

The line was:

int y;
y = (x > 0) ? 2 : x * 3;

it compiles and prints out a line of zero, but how does it work?

November 19th, 2004, 05:35 AM

gertcuppens

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THe following code

int y;
y = (x > 0) ? 2 : x * 3;

means
If x is greater than 0, then y will get the value of 2; if not,
it will get the value of x * 3.
So, if I'm correct, then x would have to be equal to zero.

November 22nd, 2004, 11:21 AM

MadCowDzz

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What you read was a ternary operator

Your example is the same as saying:

Code:

if (x>0) {
    y = 2
} else {
    y = x * 3
}

It's basically a one-line IF statement. Notice, all three conditions are required (if/then/else).

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