Computer Science · Oct / Nov 2020 · Paper 23 · Question 4

This flowchart represents an algorithm that allows the input of two numbers and performs a calculation. The predefined function MOD finds the remainder from integer division for example X 8 MOD 5 gives X a value of 3. START A Y MOD Z END IS Y = 0 ? IS Y > Z ? IS A = 0 ? A Z MOD Y INPUT Y,Z OUTPUT "Invalid" OUTPUT "Valid" No No No Yes Yes Yes

Read automatically from the paper; the printed page above is exact.