How do I point a pointer to another pointer?

Pointer assignment between two pointers makes them point to the same pointee. So the assignment y = x; makes y point to the same pointee as x . Pointer assignment does not touch the pointees. It just changes one pointer to have the same reference as another pointer.

How pointer is initialized in C?

You need to initialize a pointer by assigning it a valid address. This is normally done via the address-of operator (&). The address-of operator (&) operates on a variable, and returns the address of the variable. For example, if number is an int variable, &number returns the address of the variable number.

What is pointer assignment in C?

In ordinary assignment involving pointers, the pointer is an alias for its target. In pointer assignment, the pointer is associated with a target. If the target is undefined or disassociated, the pointer acquires the same status as the target.

How do pointers differ from variables in C?

Ordinary variables hold values of their type while pointers always hold addresses. Notice that pointer variable holds address; address of some variable or pointer variable while ordinary variables hold values of their respective types.

How can pointer variable be initialized?

Can pointers be compared?

Pointers of the same type (after pointer conversions) can be compared for equality. Two pointers of the same type compare equal if and only if they are both null, both point to the same function, or both represent the same address (3.9. Otherwise if only one is null, they compare unequal.

How do you explain pointers?

A pointer is a variable that stores a memory address. Pointers are used to store the addresses of other variables or memory items. Pointers are very useful for another type of parameter passing, usually referred to as Pass By Address. Pointers are essential for dynamic memory allocation.

How does a pointer work?

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.

Can a pointer point to itself in C?

Yes, a pointer can contain the position of a pointer to itself; even a long can contain the position of a pointer to itself.