Functions, Procedures

Question 1

Functions and procedures make a program:

Answer 1

• more readable
• easier to debug
• less repetitive
• simpler
• more efficient
• easier to understand by dividing the program up into modules

Question 2

How do they differ?

Answer 2

(a) A procedure does not return a value through its name.
(b) A procedure heading starts with the key word procedure in place of function.
(c) The call statement of a procedure is not part of a larger statement but stands alone as a
complete statement.
(d) A procedure may return one or more or no values to the main program. A function
must return one value that is of limited type.

Question 3

What are macros

Answer 3

A single instruction representing a group of instructions, written either by the manufacturere to perform some common task such as input and output, or by the user

Question 4

What is a query?

Answer 4

A query is a request for data results, for action on data, or for both.

Question 5

What are they?

Answer 5

A function or procedure is a block of code that can be called into execution from anywhere in the program. A procedure is also called a subroutine.