## What's the difference between `go build` and `go run`?
1. `go run` just compiles a program; whereas `go build` both compiles and runs it.
2. `go run` both compiles and runs a program; whereas `go build` just compiles it. *CORRECT*

> 1. It's opposite actually.
> 2. `go run` compiles your program and puts it in a temporary directory. Then it runs the compiled program in there.


## Which directory `go build` puts the compiled code into?
1. The same directory where you call `go build` *CORRECT*
2. $GOPATH/src directory
3. $GOPATH/pkg directory
4. Into a temporary directory.

> 2. There only lives Go source-code files
> 3. Go only puts your code there when you call `go install`.


## Which directory `go run` puts the compiled code into?
1. The same directory where you call `go run`
2. $GOPATH/src directory
3. $GOPATH/pkg directory
4. Into a temporary directory. *CORRECT*


## Which one below is true for runtime?
1. It happens when your program starts running in a computer *CORRECT*
2. It happens while your program is being compiled


## Which one below is true for the compile-time?
1. It happens when your program starts running in a computer
2. It happens while your program is being compiled  *CORRECT*


## In which stage your program can print a message to the console?
1. While it's being compiled.
2. While it runs (after compile-time). *CORRECT*
3. While it runs (inside the compile-time).

> 1. In the compilation step your program cannot print a message. In that stage, it's literally dead.
> 2. That's right. That's the only time which your program can interact with a computer and instruct it to print a message to the console.
> 3. Running can only happen after the compile-time