Computer Science – 9.2 Algorithms | e-Consult

Stepwise Refinement for Calculating the Area of a Rectangle:

1. Initial Outline (High-Level): Calculate the area of a rectangle by multiplying its length and width.
2. Refinement 1: Identify Inputs and Outputs. The algorithm requires the length and width of the rectangle as input and the area as output.
3. Refinement 2: Breakdown the Calculation. The core calculation is multiplication. We need to specify how to obtain the length and width. Assume these are provided as input values.
4. Refinement 3: Detailed Steps.

• Get the length of the rectangle from the input.
• Get the width of the rectangle from the input.
• Multiply the length and width together.
• The result of the multiplication is the area of the rectangle.
• Output the calculated area.