What does this statement mean? Also tell it's output

Question

Int exp = 1?0:2?3:4 ;
Printf("%d",exp);

Answer 1

It is nested ternary, syntax for ternary operator is:
condition? true-case : false-case;

In this case exp will be equal to 0.

1? 0 : 2? 3 : 4;
As in the condition part, the constant value is 1 which evaluates to true so the true case will be executed which has a constant value 0.

Edit:
Nested ternary is similar to nested if-else-if.

Answer 2

0

Answer 3

So what is output?