Procedure

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Which statement describes a procedure?

A A named subroutine that always returns a value to the caller

B A named subroutine that does a job and does not return a value

2. Which is the correct way to call a procedure named ShowMenu?

A total ← CALL ShowMenu()

B CALL ShowMenu()

3. Which is a good job for a procedure?

A Outputting a welcome message on the screen

B Working out the area of a rectangle and handing it back

4. True or false: a procedure must have at least one parameter.

A False - a procedure can have parameters or none

B True - a procedure always needs a parameter

5. Which header defines a procedure with one parameter?

A PROCEDURE Greet(Name : STRING)

B PROCEDURE Greet(Name : STRING) RETURNS STRING

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1PROCEDURE ShowLine() OUTPUT "-----" ENDPROCEDURE		AA procedure must not contain RETURN with a value because it does not return a value. Remove the RETURN line.
2CALL ShowLine()		BENDPROCEDURE
3A procedure can have a parameter so it can do its job with a value passed in		CPROCEDURE Greet(Name : STRING)
4A procedure does not return a value, so it ends with ENDPROCEDURE and has no RETURN		DA procedure returns no value, so its result cannot be stored in a variable. It should be called with CALL ShowLine().
5x ← ShowLine()		EA complete statement that runs the procedure ShowLine
6PROCEDURE ShowLine() OUTPUT "-----" RETURN 5 ENDPROCEDURE		FA procedure with no parameters that does a job (outputs a line) and does not return a value

Definitions

PROCEDURE

Fill in the Blanks

Complete each line of code by filling in the missing parts.

_________ ShowMenu() OUTPUT "Menu" ENDPROCEDURE

PROCEDURE ShowMenu() OUTPUT "Menu" ____________

____ ShowMenu()

PROCEDURE Greet(Name : ______) OUTPUT "Hello ", Name ENDPROCEDURE

PROCEDURE Greet(Name : STRING) OUTPUT "Hi ", ____ ENDPROCEDURE

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A PROCEDURE ShowTitle()

B OUTPUT "Quiz Time"

C ENDPROCEDURE

D ShowTitle()

Question 2

A FUNCTION ShowLine()

B OUTPUT "----------"

C ENDPROCEDURE

D CALL ShowLine()

Question 3

A PROCEDURE Greet(Who : STRING)

B OUTPUT "Hello ", Who

C ENDFUNCTION

D CALL Greet("Sam")

Question 4

A PROCEDURE ShowSum(N : INTEGER)

B RETURN N + 10

C ENDPROCEDURE

D CALL ShowSum(5)

Question 5

A PROCEDURE Show(N : INTEGER)

B OUTPUT "Number"

C OUTPUT M

D ENDPROCEDURE

E CALL Show(7)

Answer Key

Procedure

Section A: Quick Questions

B — A named subroutine that does a job and does not return a value

B — CALL ShowMenu()

A — Outputting a welcome message on the screen

A — False - a procedure can have parameters or none

A — PROCEDURE Greet(Name : STRING)

Section B: Match the Pairs

PROCEDURE ShowLine() OUTPUT "-----" ENDPROCEDURE → A procedure with no parameters that does a job (outputs a line) and does not return a value

CALL ShowLine() → A complete statement that runs the procedure ShowLine

A procedure can have a parameter so it can do its job with a value passed in → PROCEDURE Greet(Name : STRING)

A procedure does not return a value, so it ends with ENDPROCEDURE and has no RETURN → ENDPROCEDURE

x ← ShowLine() → A procedure returns no value, so its result cannot be stored in a variable. It should be called with CALL ShowLine().

PROCEDURE ShowLine() OUTPUT "-----" RETURN 5 ENDPROCEDURE → A procedure must not contain RETURN with a value because it does not return a value. Remove the RETURN line.

Section C: Definitions

PROCEDURE — A named subroutine that does a job, like outputting a line, but does not return a value. It is called as a full statement and can have parameters or none.

Section D: Fill in the Blanks

PROCEDURE ShowMenu()
  OUTPUT "Menu"
ENDPROCEDURE

PROCEDURE ShowMenu()
  OUTPUT "Menu"
ENDPROCEDURE

CALL ShowMenu()

PROCEDURE Greet(Name : STRING)
  OUTPUT "Hello ", Name
ENDPROCEDURE

PROCEDURE Greet(Name : STRING)
  OUTPUT "Hi ", Name
ENDPROCEDURE

Section E: Spot the Error

D — A procedure is called as a complete statement using CALL. It should be CALL ShowTitle().

A — This subroutine only outputs a line and returns no value, so it is a procedure. It must start with PROCEDURE to match ENDPROCEDURE.

C — A procedure must be closed with ENDPROCEDURE, not ENDFUNCTION.

B — A procedure does not return a value, so it cannot use RETURN. It should do its job with OUTPUT N + 10.

C — The procedure only knows its parameter N. M has not been declared, so it should be OUTPUT N.