Algorithms — practice questions

Here is a step-by-step solution following standard pseudocode conventions.

1. Identify inputs, processes, and outputs:
   • Inputs: Length, Width
   • Process: $Area = Length * Width$
   • Output: Area
2. Write the pseudocode:

DECLARE Length : REAL
DECLARE Width : REAL
DECLARE Area : REAL

OUTPUT "Enter the length of the rectangle: "
INPUT Length

OUTPUT "Enter the width of the rectangle: "
INPUT Width

Area <-- Length * Width

OUTPUT "The area of the rectangle is: ", Area

Marks: 1 mark for declaring variables, 1 mark for inputting both values, 1 mark for the correct calculation, 1 mark for outputting the result.

1. Identify inputs, processes, and outputs:
   • Input: Age
   • Process: Check if $Age <= 15$ OR $Age >= 65$
   • Outputs: 'Discount applies' or 'Full price payable'
2. Write the pseudocode:

DECLARE Age : INTEGER

OUTPUT "Please enter your age: "
INPUT Age

IF Age <= 15 OR Age >= 65 THEN
  OUTPUT "Discount applies"
ELSE
  OUTPUT "Full price payable"
ENDIF

Marks: 1 mark for inputting age, 1 mark for the IF condition with the correct logic ($<= 15$), 1 mark for including the $OR Age >= 65$ condition, 1 mark for the correct outputs in the THEN and ELSE branches.