Explain why a programmer would use procedures and parameters when writing a program.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2023). The mark or mark type is shown in brackets.

1. [4] One mark per mark point, max four
2. Procedures, max three
3. MP1 to enable the programmer to write a collection of programming statements under a single identifier
4. MP2 to allow modular programs to be created // to allow procedures to be re-used within the program or in other programs
5. MP3 to make program creation faster because procedures can be re-used // to enable different programmers to work on different procedures in the same project
6. MP4 to make programs shorter (than using the repeated code) / using less duplication of code // to make programs easier to maintain due to being shorter.
7. Parameters, max three
8. MP5 to pass values from the main program to a procedure / function
9. MP6 ...so that they can be used in the procedure / function
10. MP7 allow the procedure / function to be re-used with different data.