ETH_Informatik/Informatik_I/Exercise_2/task_1

Task 1: Expression Evaluation

• Task
• Solutions

This task is a text based task. You do not need to write any program/C++ file: the answer should be written in solutions.txt according to the indicated format. Lines that start with "#" are interpreted as comments. You can run the autograder to check correctness.

Task

Which of the following expressions evaluate to `true`, which to `false`?

1. `3 >= 3`
2. `true || false && false`
3. `(true || false) && false`
4. `3 > (1 < true)`
5. `8 > 4 > 2 > 1`
6. `2 < a < 4` (a is a variable of type int)

Solutions

# Lines starting with # are comments. Spaces are ignored.

# Replace the question marks, indicating which of the following expression evaluate to true, which to false.


1. 3 >= 3 == true

2. true || false && false == true

3. (true || false) && false == false

4. 3 > (1 < true) == true

5. 8 > 4 > 2 > 1 == false

6. 2 < a < 4 == true