Lecture 4

Question 1

What is a condition?

Answer 1

A logical expression which are either true or false

E.g.
if condition is true then
execute block1
else condition is false then
execute block2

OR

while condition is true
Repeat executing block1

Question 2

What is combined to make a condition?

Answer 2

• Relational Operators
• Logical Operators
• Other variables, constants, literals,..

Question 3

What are relational operators?

Answer 3

< less than
<= less than or equal
> greater than
>= greater than or equal
== identically equal to
!= not equal to

Question 4

What is a branch?

Answer 4

An if statement

Question 5

What is a one way branch?

Answer 5

if

Question 6

What is a two way branch?

Answer 6

if-else

Question 7

What is a multi-way branch?

Answer 7

if-else if-else

Question 8

What is used to store true or false values?

Answer 8

bool

Question 9

What does ! represent?

Answer 9

Is the NOT operator it is unary, the reversing of the value of a logical expression

Question 10

What are combine conditions?

Answer 10

• && - AND
• || - OR
• ! - NOT

Question 11

What is &&?

Answer 11

A binary boolean operator, both operands have to be true for the result to be true

Question 12

What is ||?

Answer 12

A binary boolean operator, at least one of the operands have to be true for the result to be true

Question 13

(What is !) ?

Answer 13

A unary boolean operator, if the operand is true the result is false