Week 6 Quiz

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Week 6 Quiz

This week we looked at another new thing in C - pointers. What type of value can a pointer hold?

Value of a variable

Address of a variable

Data type of a variable

Size of a variable

Clear selection

There are many different types of pointers. Which of the following is not a valid type of pointer?

integer pointer

float pointer

character pointer

All of the above are valid pointers

Clear selection

What would be the appropriate way to declare an integer pointer?

int a;

int *a;

int ptr a;

int &a;

Clear selection

What would be the appropriate way to assign an address to an integer pointer?

Assume a, the integer pointer has already been declared. b is the integer with the address we're using for this operation.

a = b;

a = *b;

*a = &b

a = &b

Clear selection

Which of the following is the appropriate way to de-reference a pointer?

De-referencing a pointer also mean that we're getting the pointer to return the value of the variable that it is pointing to.

*&a

Clear selection

By passing pointers as function parameters, we can have more than one "return value". Under which circumstances is this statement not in effect?

Assume pointer is not used in any other operations besides those described below.

Pointer is assigned another address in function

Computations were performed to de-referenced value of pointer

A new value was assigned to a de-referenced pointer

All of the above will ensure that pointer will change the value of the variable that it is pointing to

Clear selection

Image 1

Image 1 above shows the use of a pointer for taking user inputs. Is there anything wrong with the code in the image?

Assume pointer is not used in any other operations besides those described below.

The address operator "&" that should be in front of pointer in the scanf statement is missing

The wrong format specifier is used. %p should be used instead

Nothing is wrong

There is a syntax error in the code

Clear selection

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