4. Conditional execution

Question 1

What do we mean by conditional execution?

Answer 1

Executing certain instructions under certain circumstances, based on the values of the variables in the program.

Question 2

How many possible values does a boolean expression have?

Answer 2

Either true or false

Question 3

How many relational operators are there, and what are they?

Answer 3

1) == - equal
2) != - not equal
3) < - less than
4) > - greater than
5) <= - less than or equal
6) >= - greater than or equal

Question 4

What are the three parts of an if else statement?

Answer 4

1) A condition or boolean expression.
2) A statement which will be executed when the condition is true.
3) Another statement which will be executed when the condition is false.

Question 5

What is special about the way we lay out if else statements contained within the false part of another?

Answer 5

We say they are nested, and indent the next if-else statement more, than the first else statement.

Question 6

What is the relationship between the if statement and the if else statement?

Answer 6

ss

Question 7

What is the point of putting a list of statements inside a compound statement?

Answer 7

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