Variables

Question 1

Which of the following is true regarding a variable in C?

Answer 1

• has a specific type
• the data type determines the size of the variable
• the data type determines the set of operations that can be applied to the variable
• the data type determines the range of values that can be stored
• the data type determines the layout of the variable’s memory

Question 2

Char

Answer 2

Typically one byte and is an integer type

Question 3

Int

Answer 3

the most natural size of integer for the machine

Question 4

Float

Answer 4

A single precision floating point value

Question 5

Double

Answer 5

A double-precision floating point value

Question 6

Void

Answer 6

Represents the absence of type

Question 7

A variable definition must include as a minimum which of the following? Select all that apply.

int variableName = 53;

Answer 7

Semi-colin
Data type
Valid name

Question 8

Which of the following is true regarding variable definition in C? Select all that apply.

Answer 8

• has its meaning at the time of compilation only
• is useful when you are using multiple files
• provides assurance to the compiler that there exists a variable with the given type and name