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Answer these questions to demonstrate what you've learned:

Check your knowledge

1.

How do you declare and initialize a variable?

var firstName string

firstName := "John"

string firstName = "John"

firstName = "John"

2.

What happens when you declare a variable but don't use it?

You get a warning.

Nothing. There's no problem if you have unused objects.

You get a warning, but the next time the code won't compile.

You get an error. The program won't compile.

3.

How do data conversion types work in Go?

You have to do conversion explicitly. Implicit conversion doesn't work in Go.

You can do implicit casting from int to int32.

You can only do it through external libraries.

You can't convert from int to string or vice-versa.

4.

Why would you use pointers in Go?

Go doesn't support pointers.

To free up memory.

To change variable values from the function caller.

5.

How do you differentiate between a package and a standalone application?

A standalone application uses the package main. A package (library) uses a different name.

You have to run either go create library or go create program.

It doesn't matter. It depends on how you use the code after you're done programming.

You must answer all questions before checking your work.

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