Algorithm and Flowchart

What is an algorithm?

• A flowchart

• Step by step instructions used to solve a problem

• A flowchart or pseudocode

• A decision

What are the three algorithm constructs?

• Sequence, selection, repetition

• Input, output, process

• Input/output, decision, terminator

• Loop, input/output, process

What is the difference between a flowchart and pseudocode?

• A flowchart is diagramatic whilst pseudocode is written in a programming language (eg. Pascal or Java)

• A flowchart is textual but pseudocode is diagrammatic

• A flwochart is a diagrammatic description of an algorithm while pseudocode is a textual description of an algorithm

• A flwochart and pseudocode are the same thing

In a flowchart an input or output instruction is represented by

• A rectangle

• A rhombus

• A parallelogram

• A circle

In a flowchart, a calculation (process) is represented by

• A rectangle

• A rhombus

• A parallelogram

• A circle

A flowchart needs to represent a situation where for each mark a student is award 'Pass' or 'Fail'...the system will consider the mark and if it's 50 or over award 'Pass', else it awards 'Fail'. This is an example of which of the algorithm constructs?

• Decision

• Loop

• Sequence

• All of the above

. A flowchart needs to represent a situation where the user is asked to enter his age, the age is read into the system and the system outputs a 'Thank You' message. This is an example of which of the algorithm constructs?

• Decision

• Loop

• Sequence

• All of the above

Programming languages give computers instructions

• True

• False

When you write an algorithm the order of the instructions is very important.

• True

• False

What should be considered when designing an algorithm?

• If the correct hardware is being used

• If the correct software is being used

• If there is more than one way of solving the problem

• None of the Above