What does int i = j < 10 ? 5 : 15; mean?

Answer 1

// similar to

int i;

if (j < 10) i = 5;
else i = 15;

Answer 2

It's like a shorter if-else-statement. You wamt to assign a value to the variable i here. The value depends on a statement standing in front of the question mark. If it's true, the first value is assigned (5), if not, the second one (15).

Answer 3

good

Answer 4

i is 5 and 15

Answer 5

and j is 10