Review problems 3

Review problems 3#

Activity 58 (AdultCorpulenceIndex)

Corpulence index is a measure of leanness:

\( \mathrm{CI} = \frac{\mathrm{mass}}{\mathrm{height}^3} \)

Write a program that calculates corpulence index (CI) for adults and output the corresponding category.

Requirements:

  • use constant variables for the CI category ranges, e.g., const int underWeightMax = 11.

  • you must define a function called ci() for calculating the CI.

  • CI must be rounded to two digits after the decimal dot when printed on the console

  • use first an if-else statement

    • if your programs works, then comment it out and solve the problem with a switch statement

Enter mass in kg
80
Enter height in m
1.70
Adults corpulence index of 16.28 means: overweight
Hint

Activity 59 (ChocolateMachineLeasing)

You work at a company that manufactures machines for chocolate and confectionary production. In recent years the machines become very complex so your company is transitioning to a leasing model, where your company does not only sell but also provide maintenance that includes software updates to the machines. You are asked to write a tool that calculates example scenarios according to the costs below:

Example run:

Select machine
0. Tempering machine
1. Aeration machine
2. Enrober
1
Enter downtime in hours
-1
Downtime must be a non-negative integer. Try again.
2
Enter leasing time in months
10
Total cost: 74800 EUR

  • Base lease fee

  • Downtime penalty

    • if a machine is down for more than 1h in a month, then the customer receives 100 EUR/hour compensation for each downtime hour.

    • The compensation cannot be more than the total base lease fee.

  • Long-term discounts

    • more than 12 months: 5%

    • more than 24 months: 10%

Requirements:

  • your program contains the function with the following signature:

    decimal LeasingCost(int machineId, decimal downtimeHours, decimal leasingTimeMonths)

    Example outputs:

    LeasingCost(0, 0, 1);
LeasingCost(2, 0, 1);
LeasingCost(2, 1, 1);
LeasingCost(2, 2, 1);
LeasingCost(2, 0, 2);
LeasingCost(2, 200, 2);
LeasingCost(2, 0, 20);
LeasingCost(2, 0, 30);

    Output:

    5000
6200
6200
6000
12400
0
95000.00
135000.0
Hint

Review: Activity 32.

Activity 60 (OOPBasedTodoApp)

Let’s implement a simple OOP-based To-do app. It must have the following classes and methods:

        classDiagram
    class TodoItem {
        +string action
        +bool done
    }

    class TodoList {
        +List~TodoItem~ Items
        +Add(TodoItem item)
        +getTodos() List~TodoItem~
        +MarkActionDone(string action)
    }

    TodoList o-- TodoItem

Use the following code to test your app:

var tl = new TodoList();
tl.Add(new TodoItem { action = "Grocery", done = false });
tl.Add(new TodoItem { action = "Gym", done = false });
tl.MarkActionDone("Gym");
foreach (var todo in tl.getTodos()) Console.WriteLine(todo.action);
// Should output "Grocery"

// optional:
Console.WriteLine(tl);
// Should output "Grocery"
Hint