Totalling & Counting (Cambridge International IGCSE Computer Science)
Exam board Cambridge International · IGCSEUpdated 2026-03-19
Spec point — "(d) Understand and use the concepts of totalling and counting"
Totalling & Counting
How do you use totalling in a program?
- Totalling involves adding up values, often in a loop
- A total variable is set to 0 at the beginning of the program and then updated within a loop, such as:
| Pseudocode | Python |
|---|---|
How do you use counting in a program?
- Counting involves keeping track of the number of times a particular event occurs
- A count variable is set to 0 and then updated within a loop, such as:
| Pseudocode | Python |
|---|---|
Worked Example Write an algorithm using pseudocode that:
- Inputs 20 numbers
- Outputs how many of these numbers are greater than 50
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