C#.NET — Evaluate and predict the output: int num = 1, z = 5; if (!(num <= 0)) Console.WriteLine(++num + z++ + " " + ++z); else Console.WriteLine(--num + z-- + " " + --z);

Introduction / Context:
This problem tests your command of C#.NET expression evaluation, especially the interaction between prefix and postfix increment operators inside a conditional branch.

Given Data / Assumptions:

• Initial values: num = 1, z = 5.
• Condition checked: !(num <= 0).
• Output concatenates two computed numeric expressions separated by a space.

Concept / Approach:
Remember that prefix increment (++x) increments first and then yields the incremented value, while postfix increment (x++) yields the current value and then increments. Also, the if condition is evaluated before either branch executes.

Step-by-Step Solution:

Verification / Alternative check:
You can insert temporary writes to trace num and z after each operation, confirming z transitions 5 → 6 → 7 and num transitions 1 → 2.

Why Other Options Are Wrong:
A/B/C predict incorrect totals from mishandling prefix/postfix order; E is inapplicable because a definite result exists and compiles.

Common Pitfalls:
Mistaking the value contributed by z++ as 6 instead of 5, or assuming ++z on the right uses the previous z value without the earlier increment.

Final Answer:
7 7