Software Design and Development
Task 3
For your first project, VizTech would like you to design a solution for Mr. Brown.
Mr Brown, who owns an interior design company, Addurno, has asked for a program which will help calculate the material requirements for his customers. His requirements are as follows:
• He must be able to enter the dimensions of the room: height (between 2 and 6 metres) and length of all 4 walls (min 1 metre, max 25 metres)
• The program must calculate the total area of the room
• Customers have a choice between paint or wallpaper
• If paint is chosen then they have a choice of 3 types. Each tin of paint will cover 35 square metres:
o Luxury which costs £47.25 per tin
o Standard which costs £25.00 per tin
o Economy which costs £15.75 per tin
• If wallpaper is chosen, they have a choice between 2 types. All wallpaper rolls are 0.53m wide and 10m long:
o Luxury which costs £15.96 per roll
o Economy which costs £6.58 per roll
• Customers may choose an optional preparation treatment for the walls which costs and additional £0.50 per square metre
• The program should produce an itemised bill showing how many cans of paint or rolls of wallpaper are required along with a total for the entire job.
a) Create a design for the above requirements to include the following design tools:
a. Screen design for the program
b. Data Flow Diagrams for each screen design
b) Justify the software structures and data types used in your programmed solution, for example why you are using a drop down list on the screen and which variables you will be using.
c) Develop pseudocode algorithms to demonstrate how the programming will be structured. You will need to annotate them to make it clear what the program is doing and how it is doing it. You should also indicate how the algorithms are meeting the design requirement.
Please note that this task is designs only and the program does not have to be built.
This task is weighted at 100% of the assessment. Word count 1,600
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