?: operator

How do you do use this? I sort of know what it does, but I don't understand how.

Condition ? TruePart : FalsePart

It's mainly used for replacing if statements:

Code:

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theNumber *= ( doDouble == true ? 2 : 1 );

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Code:

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int true=1;
int test=0;

test = (true==1) ? 1 : 0;
cout << test << endl;

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The output would be 1. Read it like this, if test is equal to 1 then test equals 1, else test equals 0.

Read it like this, if test is equal to 1 then test equals 1, else test equals 0.

He meant "if true is equal to 1 then test equals 1, else test equals 0.

Oops...Thank you for the correction. Misstyped it and forgot to re-read my post.