Practical 02: Selection Statements
We will now proceed with implementing selection statements in this practical. Selection statements in Java include the if-else statement, and the switch statement.
Tasks
Task 1
Write a lottery program that randomly generates a two-digit number (10-99), prompts the user to enter another two-digit number (also 10-99), and determines what the user wins according to the following rules:
- If the user input exactly matches the randomly generated lottery number, the reward is $10,000.
- If the user input has both numbers used in the generated lottery number, the reward is $3,000.
- If any one of the digits in the user input matches one of the digits used in the generated lottery number, the reward is $1,000.
- Give no reward otherwise.
Task 2
Write a program that prompts the user to enter a year and display the Chinese zodiac animal that corresponds with the given remainder after dividing by 12:
| Remainder | Chinese Zodiac Animal | Remainder | Chinese Zodiac Animal |
|---|---|---|---|
| 0 | Monkey | 6 | Tiger |
| 1 | Rooster | 7 | Rabbit |
| 2 | Dog | 8 | Dragon |
| 3 | Pig | 9 | Snake |
| 4 | Rat | 10 | Horse |
| 5 | Ox | 11 | Sheep |
Task 3
The Body Mass Index (BMI) is a measure of health on weight. A person's BMI is calculated by taking the person's weight (in kilograms) divided by the person's height squared (height in meters). Create a BMI program that takes in both a person's weight and height as values to interpret the person's BMI. The respective BMI interpretations are as follows:
| BMI | Interpretation |
|---|---|
| BMI < 18.5 | Underweight |
| 18.5 ≤ BMI < 25.0 | Normal |
| 25.0 ≤ BMI < 30.0 | Overweight |
| BMI ≥ 30.0 | Obese |
Task 4
The personal income tax is calculated based on the filing status and taxable income. There are four filing statuses: single filers, married filing jointly, married filing separately, and head of household. The tax rates are as shown below.
Create a program that prompts users to input their filing status and taxable income to calculate the required tax payment for the year.
Task 5
Write a program to calculate the electricity bill with the rates as follows:
| Consumed Units | Rate ($) |
|---|---|
| 1-50 | 1.15 |
| 51-100 | 2.60 |
| 101-150 | 3.55 |
| 151-200 | 4.50 |
| 201-300 | 5.90 |
| 301-400 | 6.90 |
| 401-500 | 7.90 |
| 501-1000 | 8.90 |
| >1000 | 10.99 |
Sample Output:
Enter Previous Month Reading: 180
Enter Current Month Reading: 275
Total Units Consumed: 95
Total Bill: $174.50