IGCSE Computer Science Paper 2 Crossword: 7a Program Development Life Cycle (Modules 47–57)
Name:
Date:
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Crossword
Read each clue and write the matching term in the grid. Numbers in brackets show the letters in each word.
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9
Across
- 1. A validation ______ that tests an input is the expected data ______, such as a whole number (INTEGER) for an age, and rejects letters or other wrong types. Word 2 of: ____ _____ (5)
- 2. A running ______: set ______ to 0 before the loop, then add each Value to ______ on every repeat. Output ______ after the loop ends. Word 1 of: _____ ← _____ + Value (5)
- 4. Word 1 of the term in 1 Across: ____ _____ (4)
- 6. A length check tests the number of characters in an input is the required length or within a limit, using LENGTH, e.g. a ______ of at least 8 characters or a PIN of exactly 4. Word 2 of: LENGTH(________) >= 8 (8)
- 8. A post-condition loop: its statements run at least once, then the condition is tested after them. The loop stops when the condition is TRUE. Word 2 of: ______ ... _____ (5)
- 9. Word 1 of the term in 8 Across: ______ ... _____ (6)
Down
- 1. A ______ is a variable set to 0 before a loop, then increased by 1 with ______ each time the thing being counted happens. Word 1 of: _______ ← _______ + 1 (7)
- 3. A range check tests that a value lies between the lowest and highest allowed values. The limits themselves are accepted. AND joins both limits. Word 2 of: IF ___ >= 0 AND ___ <= 120 (3)
- 5. A validation check that tests something has been entered, so the input is not empty. For example, Name <> "" or LENGTH(Name) > 0 makes sure a required field is not left blank. Word 1 of: ________ _____ (8)
- 7. Use FOR when the number of repeats is known, ______ when the loop may run zero times, and REPEAT when it must run at least once. ______ tests first; REPEAT tests last. Word 2 of: FOR, _____ or ______ (5)
Answer Key
IGCSE Computer Science Paper 2 · Modules 47–57
1C
H
E
C
K
2T
O
T
3A
L
O
G
U
4T
Y
5P
E
N
R
T
E
E
6P
A
S
S
7W
O
R
D
E
H
8U
N
T
I
L
C
L
9R
E
P
E
A
T
Across
1CHECK — A validation ______ that tests an input is the expected data ______, such as a whole number (INTEGER) for an age, and rejects letters or other wrong types. Word 2 of: ____ _____
2TOTAL — A running ______: set ______ to 0 before the loop, then add each Value to ______ on every repeat. Output ______ after the loop ends. Word 1 of: _____ ← _____ + Value
4TYPE — Word 1 of the term in 1 Across: ____ _____
6PASSWORD — A length check tests the number of characters in an input is the required length or within a limit, using LENGTH, e.g. a ______ of at least 8 characters or a PIN of exactly 4. Word 2 of: LENGTH(________) >= 8
8UNTIL — A post-condition loop: its statements run at least once, then the condition is tested after them. The loop stops when the condition is TRUE. Word 2 of: ______ ... _____
9REPEAT — Word 1 of the term in 8 Across: ______ ... _____
Down
1COUNTER — A ______ is a variable set to 0 before a loop, then increased by 1 with ______ each time the thing being counted happens. Word 1 of: _______ ← _______ + 1
3AGE — A range check tests that a value lies between the lowest and highest allowed values. The limits themselves are accepted. AND joins both limits. Word 2 of: IF ___ >= 0 AND ___ <= 120
5PRESENCE — A validation check that tests something has been entered, so the input is not empty. For example, Name <> "" or LENGTH(Name) > 0 makes sure a required field is not left blank. Word 1 of: ________ _____
7WHILE — Use FOR when the number of repeats is known, ______ when the loop may run zero times, and REPEAT when it must run at least once. ______ tests first; REPEAT tests last. Word 2 of: FOR, _____ or ______