2.1.4 Thinking Logically

Question 1

What is the point of this topic?

Answer 1

Identification of decision points for branching or iteration?

Question 2

What is the aim of the structured approach?

Answer 2

To improve clarity and maintainability of programs.

Question 3

What are the three basic structures of the structured approach?

Answer 3

sequence
selection
iteration

Question 4

What are the examples of programming languages that use the structured approach?

Answer 4

Python and Pascal

Question 5

What are the 2 tools used for designing algorithms?

Answer 5

Flowcharts and psudocodes

Question 6

What is the symbol for a decision in a flowchart?

Answer 6

A diamond

Question 7

What is the symbol for a process in a flowchart?

Answer 7

A rectangle

Question 8

What is the symbol for inputs/outputs in a flowchart?

Answer 8

A paralellogram

Question 9

What is the symbol for a document in a flowchart?

Answer 9

Rectangle with going down paint at bottom

Question 10

What is the symbol for a sub process in a flowchart?

Answer 10

A rectangle with two lines towards the edges on it.

Question 11

What is a sequence?

Answer 11

Linear execution of statements

Question 12

What is selection?

Answer 12

Used to decide which sequence of statements will be executed based upon conditions. e.g If , else , then

Question 13

What is an iteration?

Answer 13

Repetition of a sequence until condition is met e.g. repeat until or while