Design, testing and translations

Question 1

What could be used to structure your programming?

Answer 1

Subroutines and functions could be used to decompose a problem.

Question 2

What are the advantages of structured programming?

Answer 2

• Easier to test (each can be tested individually),
• Each subroutine can be reused,
• Each subroutine can be edited at the same time because they are individual modules, that are not connected,
• Subroutines are small and simple because they are programmed to carry out simple decomposed parts of the problem.

Question 3

What is input validation?

Answer 3

Checking if data meets certain criteria before passing it into the program. Like checking if an email has the ‘@’ sign.

Question 4

What is a syntax error?

Answer 4

When the compiler or interpreter doesn’t understand something you’ve typed because it doesn’t follow the rules or grammar of programming language.

Question 5

What is a logic error?

Answer 5

When the compiler to interpreter is able to run the program, but the program does something unexpected.

Question 6

What is a high level language?

Answer 6

• Easy to read,
• Can be stored in lots of data types,
• must be translated into machine code for the computer to understand,
• The same code will work for lots of different machines and processors.

Question 7

What is a low level language?

Answer 7

• Usually written for one type of machine,
• Very difficult to read,
• Can be executed straight away with no translation,
• Usually not used by people because it is hard to read so inefficient to code in,
• Also not very adaptable to other devices.