Conditional Operator

Question

int i,k;
i=10;
k=i<0? -i:i;
System.out.println(k); //outputs 10
i=-10;
k=i<0? -i:i;
System.out.println(k); // Also Outputs 10, WHY? shouldn't it print -10?

Answer 1

- -10 = +10....it's math
-10 is smaller than 0 so it returns - -10

Answer 2

It's because of the ternary conditional statement, combined with an assignement: the assignement is done last, after the right part of the equal sign was evaluated...

The ternary conditional shortcut work as this:

test ? expression_if_true : expression_if_false ;

So, in the condition of your code ( i<0 ), you can now see that if i<0 ( i is negative ) -i ( so, now positive value of i ) is assigned to variable cas 'k', else, i is positive, not negative and its unchanged value is assigned to 'k': this line assign to 'k' the absolute value of 'i'...

Answer 3

Yes of course. I didn't pay attention to it. Thanks.