IGCSE Computer Science Paper 2 Definitions Worksheet: 7c Pseudocode and Flowcharts (Modules 188–213)
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Key terms
Write what each term means, in your own words.
1
Count ← Count + 1
2
decision diamond
3
WHILE condition DO
4
REPEAT ... UNTIL
5
FOR loop flowchart
6
Start to Stop
7
Pseudocode to flowchart
8
Flowchart to pseudocode
9
Age = int(input())
10
if/elif/else
Answer Key
IGCSE Computer Science Paper 2 · Modules 188–213 · Student wording will vary for definitions
1Count ← Count + 1 — Flowchart symbols hold precise pseudocode, not sentences. Process boxes use ← statements like this, decisions use conditions like Mark >= 50, parallelograms use INPUT or OUTPUT.
2decision diamond — The flowchart shape for an IF. It asks a question, then the Yes path and the No path each run their own statements and rejoin before the next step.
3WHILE condition DO — In a flowchart the decision comes first. Yes runs the body and an arrow returns to the decision. No leaves the loop to the next step. The body may run zero times.
4REPEAT ... UNTIL — In a flowchart, the loop body comes first, then a decision. NO goes back to the body, YES leaves the loop, so the body runs at least once.
5FOR loop flowchart — Set Counter ← 1 in a process box, test Counter <= 10 in a decision, run the body on Yes, then do Counter ← Counter + 1 and flow back to the test. No leaves the loop.
6Start to Stop — List the inputs, processes and outputs, then draw Start, the steps in order with the correct symbols, and Stop. Check every path reaches Stop, then trace it with test values.
7Pseudocode to flowchart — Each pseudocode statement becomes one flowchart symbol: assignment is a process box, INPUT/OUTPUT a parallelogram, and IF or loop conditions a decision diamond.
8Flowchart to pseudocode — Follow the flow lines and turn each symbol into a statement. A diamond becomes IF, a back arrow shows a loop, and you add ENDIF, NEXT, ENDWHILE or UNTIL. Write keywords in capitals.
9Age = int(input()) — Python for INPUT Age: = replaces the arrow, input() reads text, and int() turns that text into a whole number. OUTPUT Age becomes print(Age); use float() for decimals.
10if/elif/else — Python has no CASE, so write it as an if/elif chain testing the same variable. The first value uses if, each other value uses elif, and OTHERWISE becomes else.