Chapter 13: Pseudocode

Question 1

Declaration of variables

Answer 1

• DECLARE Number1: INTEGER

* DECLARE YourName: STRING

Question 2

Declaration and assignment of constants

Answer 2

•CONSTANT PI=3.14

Question 3

Assignment of variables

Answer 3

•A

Question 4

Arithmetic operators

Answer 4

• + | - | * | / | ^ | DIV | MOD

Question 5

Outputting information

Answer 5

•OUTPUT “Hello” , YourName “ . YourNumber is “, Number1

Question 6

Getting input from the user

Answer 6

•INPUT “Prompt: “ A

Question 7

Data types

Answer 7

• INTEGER
• REAL
• CHAR
• STRING
• BOOLEAN
• DATE
• CURRENCY
• ARRAY

Question 8

Boolean expressions

Answer 8

• =
• <>
• >
• <
• > =
• <=
• AND | NOT | OR

Question 9

Selection statements

Answer 9

IF x<0
  THEN
    OUTPUT “Negative”
  ELSE
    IF x=0
      THEN
        OUTPUT “Zero”
      ELSE
        OUTPUT “Positive”
    ENDIF
ENDIF

Question 10

CASE statements

Answer 10

CASE of Grade
  “A”: OUTPUT “Top grade”
  “F” , “U”: OUTPUT “Fail”
  “B” ... “E”: OUTPUT “Pass”
  OTHERWISE
    OUTPUT “Invalid grade”
ENDCASE

Question 11

Count-controlled loops

Answer 11

FOR i

Question 12

Post-condition loops

Answer 12

REPEAT
INPUT “Enter Y or N: “ Answer
UNTIL Answer=“Y”

Question 13

Pre-condition loops

Answer 13

Answer “Y”
INPUT “Enter Y or N: “ Answer
ENDWHILE

Question 14

Creating 1D arrays

Answer 14

• DECLARE List1: ARRAY [1:3] OF STRING

* DECLARE List2: ARRAY [0:5] OF INTEGER

Question 15

Accessing 1D arrays

Answer 15

• NList[25]=0

* AList[3]=“D”

Question 16

Creating 2D arrays

Answer 16

Board [1:6 , 1:7] OF INTEGER

Question 17

Accessing 2D arrays

Answer 17

Board [3,4]=0

Question 18

Built-in functions

Answer 18

• ThisString[P]
• CHAR(i)
• ASCII(ch)
• LENGTH(s)
• LEFT(S,L)
• RIGHT(S,L)
• MID(S,P,L)
• CONCAT(S1,S2)

Question 19

Witing a text file

Answer 19

OPENFILE Text FOR WRITE
WRITEFILE Text, FileData
CLOSEFILE

Question 20

Reading from a text file

Answer 20

OPENFILE Text FOR READ
READFILE Text, FileData
CLOSEFILE

Question 21

Appending to a text file

Answer 21

OPENFILE Text FOR APPEND
WRITEFILE Text, FileData
CLOSEFILE

Question 22

EoF marker

Answer 22

OPENFILE Text FOR READ
WHILE NOT EOF(Text)
  READFILE Text , TextString
  OUTPUT TextString
ENDWHILE
CLOSEFILE Text