7.1.4

Subroutines

Test yourself

Subroutines

A subroutine is a named block of code within your program.

Illustrative background for Advantages of subroutinesIllustrative background for Advantages of subroutines ?? "content

Advantages of subroutines

  • Easier to read:
    • There are fewer long blocks of code to understand.
  • More efficient:
    • Blocks of code can be written once and reused many times.
  • More reliable:
    • Each subroutine can be individually tested to make sure it works.
Illustrative background for Parameters and argumentsIllustrative background for Parameters and arguments ?? "content

Parameters and arguments

  • Parameters are special variables used to pass values into a subroutine.
  • Arguments are the actual values that are passed in.
Illustrative background for Types of subroutineIllustrative background for Types of subroutine ?? "content

Types of subroutine

  • A function is a subroutine which returns a value.
  • A procedure is a subroutine which does not return a value.

Jump to other topics

1Components of a Computer

2Software & Software Development

3Exchanging Data

4Data Types, Data Structures & Algorithms

5Legal, Moral, Cultural & Ethical Issues

6Elements of Computational Thinking

6.1Thinking Abstractly

6.2Thinking Ahead

6.3Thinking Procedurally

6.4Thinking Logically

6.5Thinking Concurrently

7Problem Solving & Programming

8Algorithms

Unlock your full potential with Seneca Premium

  • Unlimited access to 10,000+ open-ended exam questions

  • Mini-mock exams based on your study history

  • Unlock 800+ premium courses & e-books

Get started with Seneca Premium