IGCSE Computer Science Paper 2 Crossword: 8.2 Arrays (Modules 449–458)
Name:
Date:
Class:
✎
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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8
Across
- 2. An error caused by using an index below the lower bound or above the upper bound, so the element does not exist. Example: Marks[31] in ARRAY[1:30] or Marks[0] when the lower bound is 1. Word 2 of: index ___ of _____ (3)
- 3. The number of elements in a 1D array: ______ bound minus ______ bound plus one. ARRAY[0:9] holds 9 - 0 + 1 = 10 elements, and ARRAY[5:9] holds 5. Word 1 of: _____ - _____ + 1 (5)
- 6. The number before the colon is the lower bound, the first index. ______ starts at 1, ______[0:29] starts at 0. Both hold 30 elements, so always state the lower bound. Word 1 of: _____[1:30] (5)
- 7. Word 2 of the term in 4 Down: __________ __________ (10)
- 8. Word 4 of the term in 2 Across: index ___ of _____ (5)
Down
- 1. Stores a value in one array element using the assignment operator ←. The value must match the array's data type, and it replaces any old value already in that element. Word 1 of: ____________[1] ← "___" (12)
- 2. Reading an element: Name[index] in ______ or an expression gives the value stored in that element. Reading only uses the value, so the element stays unchanged. Word 1 of: ______ ____________[1] (6)
- 4. An array name that says what its elements hold, like StudentNames not A. It must never be a keyword such as INPUT or FOR, and upper or lower case makes no difference. Word 1 of: __________ __________ (10)
- 5. Word 2 of the term in 3 Across: _____ - _____ + 1 (5)
- 6. Word 3 of the term in 1 Down: ____________[1] ← "___" (3)
Answer Key
IGCSE Computer Science Paper 2 · Modules 449–458
1S
2O
U
T
U
U
T
D
3U
P
P
E
R
U
N
4M
T
T
E
5L
N
A
O
6A
R
R
A
Y
N
W
L
M
7I
D
E
N
T
I
F
I
E
R
N
R
S
8R
A
N
G
E
F
U
L
Across
2OUT — An error caused by using an index below the lower bound or above the upper bound, so the element does not exist. Example: Marks[31] in ARRAY[1:30] or Marks[0] when the lower bound is 1. Word 2 of: index ___ of _____
3UPPER — The number of elements in a 1D array: ______ bound minus ______ bound plus one. ARRAY[0:9] holds 9 - 0 + 1 = 10 elements, and ARRAY[5:9] holds 5. Word 1 of: _____ - _____ + 1
6ARRAY — The number before the colon is the lower bound, the first index. ______ starts at 1, ______[0:29] starts at 0. Both hold 30 elements, so always state the lower bound. Word 1 of: _____[1:30]
7IDENTIFIER — Word 2 of the term in 4 Down: __________ __________
8RANGE — Word 4 of the term in 2 Across: index ___ of _____
Down
1STUDENTNAMES — Stores a value in one array element using the assignment operator ←. The value must match the array's data type, and it replaces any old value already in that element. Word 1 of: ____________[1] ← "___"
2OUTPUT — Reading an element: Name[index] in ______ or an expression gives the value stored in that element. Reading only uses the value, so the element stays unchanged. Word 1 of: ______ ____________[1]
4MEANINGFUL — An array name that says what its elements hold, like StudentNames not A. It must never be a keyword such as INPUT or FOR, and upper or lower case makes no difference. Word 1 of: __________ __________
5LOWER — Word 2 of the term in 3 Across: _____ - _____ + 1
6ALI — Word 3 of the term in 1 Down: ____________[1] ← "___"