Interview Hack#48 Answer

 What will be output if you will execute following c code?

1. 5 5
2. 3 5
3. 4 5
4. 5 4
5. Error

Correct answer

3 5

Explanation:

x = ++a, ++a, a++
x = 3, ++a, a++ // a = 2 + 1
x = 3, ++a, a++ // = operator has higher precedence than comma operator
x = 3, ++a, a++ // a = 3 + 1
x = 3, 4, a++
x = 3, 4, 4 // a = 4 + 1
x = 3 // a = 5