###Objectives
- Have a standard Git + IntelliJ workflow
- Know what .gitignore is and how to use it
- Understand the Java package structure (review)
- Understand the different components of a Java program (review)
- Know the basic Java types and understand when to use them (review)
- Know how to get user input using Scanner (review)
- Know when and how to use an if statement (review)
###Review
- Git + IntelliJ
- a Java program
- Variables + Types
- User Input
- If statements
###Exercises
- Try to finish as many as you can!
- After every exercise, commit your work to GitHub!
Madlibs
This program should prompt the user for a minimum of six inputs (text inputs with at least one number) and then print out your "mad lib" result! Here is a sample partial run:
Sample input:
Enter an adjective: purple
Enter another adjective: ancient
Enter a noun: dragon
Enter another noun: spoon
Sample output:
Here is your mad lib!!
The purple bear went into the ancient house.
There she saw a dragon and a spoon.
Reverse Polish Notation Calcultator
Write a Reverse Polish notation calculator! Reverse Polish notation is a mathematical notation where the operator comes after the two operands, like this 2 3 +, which evaluates to 5. Your task is to write a class RPNCalculator that prompts the user for two numbers and a mathmetical operator and then returns the correct result.
Your calculator should support the following operations:
- a + b
- a - b
- a / b
- a * b
- a % b
Here is an example:
"Please enter your first number"
3
"Please enter your second number"
7
"Please enter an operator"
-
"Result: -4"
A second example:
"Please enter your first number"
12
"Please enter your second number"
12
"Please enter an operator"
+
"Result: 24"
Your calculator only needs to handle 3 user inputs: 2 ints and 1 operator. You may test an RPN calculator here.
More fun with user input + if statements
-
Write a program that responds to different greetings
-
Write a command line fortune teller that responds to your questions
###OUR FIRST GAME
Make your own command line adventure game!
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###More exercises
User Input
- Printing the result here can be tricky!
If
- Come up with your own questions and answers
- How can you keep track of the number of correct and incorrect answers?