Computer Science · May / June 2016 · Paper 22 · Question 3

The flowchart below calculates the number of tins of paint required to paint walls. The flowchart inputs the height and width of a wall in metres, the number of doors and the number of windows. A value of –1 for the height stops the input. INPUT Height, Width, Doors, Windows Area 0 Tins 0 START END OUTPUT Tins Is Height = –1? Area Area + Height * Width – Doors * 1.5 – Windows No Yes Tins INT(Area/10 + 0.5) Complete the trace table for the input data: 3, 5, 1, 0, 3, 7, 0, 0, 3, 5, 0, 3, 3, 7, 1, 1, –1, 0, 0, 0 Area Tins Height Width Doors Windows [4]

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