Exam code: 2210
Four pseudocode descriptions and five pseudocode statements are shown.
Draw a line to link each pseudocode description to the most appropriate pseudocode statement.
Some pseudocode statements will not be used
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Tick (✓) one box to show the named section of a program that performs a specific task.
file
function
parameter
process
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A function is declared using pseudocode.
FUNCTION ConvertToCm(Inches: REAL) RETURNS REAL RETURN Inches * 2.4 ENDFUNCTION
Tick (✓) one box which accurately describes the use of the variable Inches
answer
call
parameter
response
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A database table, 2018MOV, is used to keep a record of movie details
Complete the table to identify the most appropriate data type for each field based on the data shown in the database table, 2018MOV.
Field | Data type |
|---|---|
| |
| |
| |
|
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The variables X, Y and Z are used to store data in a program:
X stores a string
Y stores a position in the string (e.g. 2)
Z stores the number of characters in the string.
Write pseudocode statements to declare the variables X, Y and Z.
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Four programming concepts and four descriptions are shown.
Draw one line to connect each programming concept to the most appropriate description
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Tick (✓) one box in each row to identify the most appropriate data type for each description. Only one tick (✓) per column.
Description | Data type | ||||
|---|---|---|---|---|---|
Boolean | Char | Integer | Real | String | |
a single character from the keyboard | |||||
multiplecharacters from the keyboard | |||||
only one of two possible values | |||||
only whole numbers | |||||
any number | |||||
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An algorithm has been written in pseudocode to calculate a check digit for a four-digit number. The algorithm then outputs the five-digit number including the check digit. The algorithm stops when –1 is input as the fourth digit.
01 Flag FALSE 02 REPEAT 03 Total 0 04 FOR Counter 1 TO 4 05 OUTPUT "Enter a digit ", Counter 06 INPUT Number[Counter] 07 Total Total + Number * Counter 08 IF Number[Counter] = 0 09 THEN 10 Flag TRUE 11 ENDIF 12 NEXT Counter 13 IF NOT Flag 14 THEN 15 Number[5] MOD(Total, 10) 16 FOR Counter 0 TO 5 17 OUTPUT Number[Counter] 18 NEXT 19 ENDIF 20 UNTIL Flag
Give the line number(s) for the statements showing:
Totalling ...........................................................................
Count-controlled loop .......................................................
Post-condition loop ............................................................
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The variables P and Q are used to store data in a program. P stores a string. Q stores a character.
Write pseudocode statements to declare the variables P and Q, store "The world" in P and store 'W' in Q
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Describe the difference between a local variable and a global variable.
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A function LENGTH(X) finds the length of a string X and a function SUBSTRING(X,Y,Z) finds a substring of X starting at position Y and Z characters long. The first character in the string is position 1.
Write a pseudocode statement to extract the word Computer from P and store it in the variable F.
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Explain the difference between a WHILE … DO … ENDWHILE and a REPEAT … UNTIL loop
B ← FALSE INPUT Num FOR Counter ← 1 TO 12 IF A[Counter] = Num THEN B ← TRUE ENDIF NEXT Counter
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Explain the purpose of the library routines DIV and ROUND.
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State two features that should be included to create a maintainable program.
Give a reason why each feature should be used.
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The function LENGTH(Phrase) calculates the length of a string Phrase
The string "The beginning is the most important part" is stored in Phrase
State the output of the pseudocode statements:
OUTPUT LENGTH(Phrase)
OUTPUT UCASE(Phrase)
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The variables P and Q are used to store data in a program. P stores a string. Q stores a character.
Write a pseudocode algorithm to:
convert P to upper case
find the position of Q in the string P (the first character in this string is in position 1)
store the position of Q in the variable Position
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Using a single loop, write an algorithm in pseudocode to output 50 names that have been stored in the array, Name[]
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The function LENGTH(Phrase) calculates the length of a string Phrase
Write the pseudocode statements to:
store the string "The beginning is the most important part" in Phrase.
calculate and output the length of the string
output the string in upper case.
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A program needs to make sure the value input for a measurement meets the following rules:
the value is a positive number
a value is always input
the value is less than 1000.
The program needs editing to include a double entry check for the value input.
The input value needs to be stored in the variable Measurement Write pseudocode to perform the double entry check until a successful input is made.
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An algorithm has been written in pseudocode to calculate a check digit for a four-digit number. The algorithm then outputs the five-digit number including the check digit. The algorithm stops when –1 is input as the fourth digit.
01 Flag FALSE 02 REPEAT 03 Total 0 04 FOR Counter 1 TO 4 05 OUTPUT "Enter a digit ", Counter 06 INPUT Number[Counter] 07 Total Total + Number * Counter 08 IF Number[Counter] = 0 09 THEN 10 Flag format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Ctext%20font-family%3D%22math1670c26185a3783678135b4697f%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2210.5%22%20y%3D%2216%22%3E%26%23x2190%3B%3C%2Ftext%3E%3C%2Fsvg%3E){kind=small}
TRUE 11 ENDIF 12 NEXT Counter 13 IF NOT Flag 14 THEN 15 Number[5] MOD(Total, 10) 16 FOR Counter 0 TO 5 17 OUTPUT Number[Counter] 18 NEXT 19 ENDIF 20 UNTIL Flag
The algorithm does not check that each input is a single digit.
Identify the place in the algorithm where this check should occur.
Write pseudocode for this check. Your pseudocode must make sure that the input is a single digit and checks for –1
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