Quick Answer: When this is placed in front of a variable name, it returns the address of that variable.?

Which operator returns the memory address of a variable?

The & is a unary operator that returns the memory address of its operand. For example, if var is an integer variable, then &var is its address.

Which variable can store the address of a variable?

A pointer variable is a special type of C++ variable that can hold the address of another variable (or as we’ll see later, the address of a function).

Which symbol is used to get the address of a variable?

When we use the ampersand symbol as a prefix to the variable name & and it gives the address of that variable.

What is address of a variable?

A memory location where data is stored is the address of that data. In C address of a variable can be obtained by prepending the character & to a variable name. Try the following program where a is a variable and &a is its address: 1.

How do you declare a pointer?

Pointers must be declared before they can be used, just like a normal variable. The syntax of declaring a pointer is to place a * in front of the name. A pointer is associated with a type (such as int and double ) too.

Which pointer does not exist?

NULL Pointer is a pointer which is pointing to nothing. In case, if we don’t have address to be assigned to a pointer, then we can simply use NULL.

How do you find the address of a variable?

We can get the address of any variable using a unary operator called Address of operator &. Writing & operator as a prefix to the variable gives the address of variable. As the address of any variable is a positive number, the format specifier %u or %p or %x is used while printing the address.

How do you print the address of a variable in C?

To print the address of a variable, we use “%p” specifier in C programming language. There are two ways to get the address of the variable: By using “address of” (&) operator. By using pointer variable.

Can store the address of variable of any datatype?

A pointer is a variable that stores the address of another variable. Unlike other variables that hold values of a certain type, pointer holds the address of a variable. For example, an integer variable holds (or you can say stores) an integer value, however an integer pointer holds the address of a integer variable.

What is pointer variable?

A pointer is a variable whose value is the address of another variable, i.e., direct address of the memory location. Like any variable or constant, you must declare a pointer before using it to store any variable address.

Which of the following is the address operator?

3. Which of the following is called address operator? Explanation: & operator is called address operator and is used to access the address of a variable.

What are C variables?

C variable is a named location in a memory where a program can manipulate the data. This location is used to hold the value of the variable. The value of the C variable may get change in the program. C variable might be belonging to any of the data type like int, float, char etc.

How do memory addresses work?

A memory address is a unique identifier used by a device or CPU for data tracking. This binary address is defined by an ordered and finite sequence allowing the CPU to track the location of each memory byte. Hardware devices and CPUs track stored data by accessing memory addresses via data buses.

Is pointer a memory address?

A memory pointer (or just pointer) is a primitive, the value of which is intended to be used as a memory address; it is said that a pointer points to a memory address. It is also said that a pointer points to a datum [in memory] when the pointer’s value is the datum’s memory address.

How do you determine the variable type?

To check the data type of variable in Python, use type() method. Python type() is an inbuilt method that returns the class type of the argument(object) passed as a parameter. You place the variable inside of a type() function, and Python returns the data type.