2.1 Three variables, three types

Three variables, three types

Unit 2: Variables, Decisions, and Input · Lesson 2.1 Variables and Types · code exercise, graded

A variable has a type, a name and a value. Picking the type is the part that takes thought: a count is not a speed and neither is a yes or no.

What to write

  1. Declare a variable called coins holding a whole number, starting at 0.
  2. Declare a variable called speed holding 2.5.
  3. Declare a variable called gameOver holding false.
  4. Use the type that fits what each one holds.

report() is written for you and prints all three. You only write the three declarations above it.

Your code

This one prints numbers rather than moving anything, so there is nothing to animate. Press Submit to check it.




What it is checked against


These are the examples you can see. There are also 3 hidden cases with different setups, so printing the answers below as text passes nothing.




Example 1: what we set up


Harness h = new Harness();
h.report();


What it should print


0
2.5
false









  

















  
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