Subroutines

Question 1

What is a subroutine?

Answer 1

Subroutines are smaller, named sections of code that are written within a larger program

Question 2

What are the advantages of sub routines?

Answer 2

Avoid duplicating code and can be reused throughout a program.
Improve the readability and maintainability of code.
Perform calculations, to retrieve data, or to make decisions based on input.

Question 3

Why is it good practise to use local variables?

Answer 3

Using local variables rather than global variables makes it easier to debug a program as the value of that variable can only be read or changed within one subroutine.

Question 4

What are the advantages of structured programming?

Answer 4

allows other programmers to easily follow the code that you have written.
less likely to contain logic errors.
Errors are more easily identified.