OCR GCSE Computer Science · J277
Paper 2
Repeating a group of instructions, either a set number of times or according to a condition.
Revise: Algorithm Creation and RefinementAlgorithms combine three basic constructs: sequence carries out instructions in order; selection chooses a branch according to a condition; iteration repeats instructions. Choosing and arranging these constructs turns a description of a task into a solution that can be followed without guessing.
- Revise: Trace Tables