Programming techniques

Question 1

what is a subprogram and what is its purpose?

Answer 1

small programs written inside of a larger, main program
-to perform a specific task

Question 2

what are the 2 types of subprograms?

Answer 2

functions and procedures

Question 3

why is a subprogram being small in size a benefit? (2)

Answer 3

-meaning they are much easier to write, test and debug.
-easy for someone else to understand.

Question 4

why can saving a subprogram as a separate module be beneficial? (2)

Answer 4

-used again in other programs.
-saves time because the programmer can use code that has already been written, tested and debugged.

Question 5

how can subprograms make programs more efficient? (2)

Answer 5

-may be used repeatedly at various points in the main program.
-the code only has to be written once, resulting in shorter programs

Question 6

similarities and differences between procedures and functions?

Answer 6

similarities: performs a specific task
difference: functions return values/ data back to the main program, procedures do not