IGCSE Computer Science Paper 2 Crossword: 7a Program Development Life Cycle (Modules 83–92)
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
- 2. In a trace table, the first row where a ______ differs from what you expected points to the faulty line of the algorithm. Look at that line, then suggest a correction. Word 2 of: first _____ _____ (5)
- 6. A prompt is written in the OUTPUT column. The value the user types for an ______ is written in that variable's column on that step, taken from the test data. Word 3 of: _____ table _____ (5)
- 8. Word 3 of the term in 3 Down: _______ a __________ ____ (10)
- 9. Word 3 of the term in 2 Across: first _____ _____ (5)
Down
- 1. Trace a ______ by testing its condition each pass: ______ tests before the body and may never run; REPEAT tests after the body so runs once at least. Stop when the ______ ends. Word 4 of: _____ and REPEAT ____ _____ (4)
- 2. Word 1 of the term in 1 Down: _____ and REPEAT ____ _____ (5)
- 3. Step through a ______ loop with valid and invalid inputs, recording each rejected value, the error message output and the value finally accepted in a trace table. Word 1 of: _______ a __________ ____ (7)
- 4. When tracing, work out the right side using the current values, then write the result in that variable's column. The old value is used first, then replaced by the new one. Word 1 of: _______ ← _______ + 1 (7)
- 5. To trace a FOR loop, give the loop variable each value from start to end in turn, run the loop body once for each value, and record every pass in its own row of the trace table. Word 2 of: FOR _____ ← 1 TO 5 (5)
- 7. Word 1 of the term in 6 Across: _____ table _____ (5)
Answer Key
IGCSE Computer Science Paper 2 · Modules 83–92
1L
2W
R
O
N
G
3T
4C
H
O
R
O
5C
6I
N
P
U
7T
A
U
O
L
R
C
N
U
E
8V
A
L
I
D
A
T
I
O
N
C
N
E
T
9V
A
L
U
E
G
R
Across
2WRONG — In a trace table, the first row where a ______ differs from what you expected points to the faulty line of the algorithm. Look at that line, then suggest a correction. Word 2 of: first _____ _____
6INPUT — A prompt is written in the OUTPUT column. The value the user types for an ______ is written in that variable's column on that step, taken from the test data. Word 3 of: _____ table _____
8VALIDATION — Word 3 of the term in 3 Down: _______ a __________ ____
9VALUE — Word 3 of the term in 2 Across: first _____ _____
Down
1LOOP — Trace a ______ by testing its condition each pass: ______ tests before the body and may never run; REPEAT tests after the body so runs once at least. Stop when the ______ ends. Word 4 of: _____ and REPEAT ____ _____
2WHILE — Word 1 of the term in 1 Down: _____ and REPEAT ____ _____
3TRACING — Step through a ______ loop with valid and invalid inputs, recording each rejected value, the error message output and the value finally accepted in a trace table. Word 1 of: _______ a __________ ____
4COUNTER — When tracing, work out the right side using the current values, then write the result in that variable's column. The old value is used first, then replaced by the new one. Word 1 of: _______ ← _______ + 1
5COUNT — To trace a FOR loop, give the loop variable each value from start to end in turn, run the loop body once for each value, and record every pass in its own row of the trace table. Word 2 of: FOR _____ ← 1 TO 5
7TRACE — Word 1 of the term in 6 Across: _____ table _____