Reference and Pointers in C++

What does this symbol allow for in C++? -> *

• De-refrencing

• Summing numbers

• Making text more sparkly

• Performing modular operations

What is the operator used for dereferencing or indirection?

• *

• &

• %

• &&

Specify whether the statement below is valid or invalid.

int i;

double * dp = &i;

• Valid

• Invalid

A pointer variable store a/an

• value of another value.

• value of another variable.

• address of another pointer.

• address of another variable.

Given the following declarations:

int i;

int *pi;

double d;

double *pd;

Specify whether the statements below is valid or invalid.

pi = &i;

• Valid

• Invalid

The __________, also known as the address operator, returns the memory address of a variable.

• asterisk (* )

• ampersand ( & )

• percent sign ( % )

• exclamation point ( ! )

What does the following statement do?

double *num2;

• Declares a double variable named num2

• Declares and initializes a pointer variable named num2

• Initializes a pointer variable named num2

• Declares a pointer variable named num2

Assuming ptr is a pointer variable, what will the following statement output?

cout << *ptr;

• the value stored in the variable whose address is contained in ptr

• the string "*ptr"

• the address of the variable whose address is stored in ptr

• the address of the variable stored in ptr

Which of the following statements displays the address of the variable numb?

• cout << numb;

• cout << *numb;

• cin >> &numb;

• cout << &numb;

Which of the following statements displays the address of the variable var?

• cout << &var;

• cout << *var;

• cin >> var;

• cout << var&;