Pseudocode Structure

Question 1

Variable assignment

Answer 1

var ← exp

Question 2

One-dimensional array assignment

Answer 2

var[iexp] ← exp

Question 3

Two-dimensional array assignment

Answer 3

var[iexp1][iexp2] ← exp

Question 4

What number does indexing start at in Pseudocode?

Answer 4

1

Question 5

Array initialisation of n elements

Answer 5

var ← [exp1, exp2, … , expn]

Question 6

Conditional branching

Answer 6

IF bexp THEN
    statements
ELSE
    statements
ENDIF

Question 7

Conditional execution (no branching)

Answer 7

IF bexp THEN
statements
ENDIF

Question 8

Multi-branching conditional with n choices

Answer 8

CASE exp OF
    exp1: statements
    ...
    expn: statements
ELSE
    statements
ENDCASE

Question 9

While loop

Answer 9

WHILE bexp
statements
ENDWHILE

Question 10

For loop

Answer 10

FOR var ← iexp1 TO iexp2
statements
ENDFOR

Question 11

Repeat/until loop

Answer 11

REPEAT
statements
UNTIL bexp

Question 12

How many times does each loop run?

Answer 12

While: Zero or more times
For: A specific number of times
Repeat/until: At least once

Question 13

In a Pseudocode for loop, where does the count variable have scope?

Answer 13

Only within the for loop

Question 14

One line comment

Answer 14

comment

Question 15

Function definition with n (possibly no) parameters

Answer 15

FUNCTION fname(param1, … , paramn)
statements
RETURN exp
ENDFUNCTION

Question 16

Return statement

Answer 16

RETURN exp

Question 17

Procedure definition with n (possibly no) parameters

Answer 17

PROCEDURE pname(param1, … , paramn)
statements
ENDPROCEDURE

Question 18

Calling a subroutine with identifier name with n parameters

Answer 18

name(param1, … , paramn)

Question 19

Modulo operator

Answer 19

iexp1 MOD iexp2

Question 20

Binary boolean operators

Answer 20

AND, OR and XOR

Question 21

Unary boolean operators

Answer 21

NOT

Question 22

Length function

Answer 22

LEN(var)

Question 23

Opens a file to read or write

Answer 23

OPEN filename to read/write

Question 24

Returns the nth line of an external file

Answer 24

READLINE(file, n)

Question 25

Writes (over) the nth line of an external file with value

Answer 25

WRITELINE(file, n, value)

Question 26

Goes through a file until the end

Answer 26

WHILE NOT eof(filename) …

*eof = End Of File

Question 27

Closes a file

Answer 27

CLOSE filename

Question 28

Writes message to output

Answer 28

OUTPUT message

Question 29

Gets the user’s input

Answer 29

USERINPUT

Question 30

An integer expression

Answer 30

iexp

Question 31

A boolean expression

Answer 31

bexp

Question 32

A series of one line statements. A statement is terminated by a new line

Answer 32

statements