You should be able to write code like this yourself. These are just to reassure you.

The official tests contain ProgramFlow/BasicLoop, which is similar but a little more complex.

1.

This program should result in 10 and 30 on the stack.

push constant 10
goto SKIP
push constant 20
label SKIP
push constant 30
label DONE
goto DONE

2.

This program should result in 131 and 151 on the stack

push constant 131
push constant 0
if-goto WHOMP
push constant 151
label WHOMP
goto WHOMP

3.

This program should result in 101 on the stack.

push constant 101
push constant 0
not
if-goto WOOP
push constant 121
label WOOP
goto WOOP