A function is a named collection of lines of code that can be 'called' (reused) whenever needed in a program. Which of the following statements is FALSE?

Functions simplify your code by making the code more readable

TRUE. If functions are named to make it clear what they do, then it is easier to get an overview of what the program is doing.

Functions make your code easier to maintain

TRUE. If the same actions are repeated many times in a program, then you should create a function to carry out those actions and use the function when needed. If there is an error in the actions, you only need to correct it once - in the function.

Functions can be shared with other programmers

TRUE. In most programming languages you can create libraries of functions which you can reuse in other programs.

Functions take longer to execute than the putting the lines of code directly in the program

TRUE in principle as there is extra overhead involved by the computer making use of the function. In practice some programming languages can optimise function use so that this effect is negligible. Even if function use did result in marginally slower programs, the benefits outweigh this.

Functions make your programs larger

FALSE. Functions make your code more compact (and easier to read).

Programming Concepts

Check your understanding - Functions

Functions simplify your code by making the code more readable

Functions make your code easier to maintain

Functions can be shared with other programmers

Functions take longer to execute than the putting the lines of code directly in the program

Functions make your programs larger