C Programming and Unix Quiz

WHAT IS THE MOST IMPORTANT REASON TO LEARN C?

• teaches us exactly how our code runs on the chip

• Programs written in C run faster than programs written in other languages

• C is a memory-safe language

• learning C allows us to read a lot of programs

A 'COMMAND' AT THE UNIX COMMAND LINE IS ACTUALLY A:

• Program

• All of the above

• File

• language construct

IN A UNIX FILE SYSTEM, FILES ARE ORGANIZED INTO:

• A tree

• none of the above

• A flat namespace

• a set of folders

IN 13S WE WANT YOU TO USE THE COMMAND LINE TO WRITE SHELL SCRIPTS SO THAT:

• you don't need to use the mouse

• you move on bad time

• your tests are repeatable

• you become experts in scripting

The expression A && !B evaluates to 0 when:

• It can never be zero

• whenever A evaluates to 0

• when A ≠ 0 both evaluate to something other than 0.

• when A evaluates to 0 and B evaluates to not 0.

What's the value of the expression A && !A?

• undefined

• 0

• 1

• depends on A

Given a variable A of type int what would &A evaluate to?

• int value stored by A

• address of the value stored by A

• 0

• int value pointed to the variable A.

Given variable A of type int*, what does the expression *A evaluate to?

• int value stored by A

• int value pointed by variable A

• 0

• address of the value stored by variable A

When the value of a is 0, (a!=0 && ((10/a)>1)) evaluates to:

• none is true

• divide by zero error

• 0

• 1

If P is a pointer of type char**, then *P is type:

• pointer to a pointer to a char

• pointer to a char

• char

• not a valid expression