Can you compare two void pointers?

The void pointer isn’t different from pointers to other types in this regard. You can’t compare them using > , >= , < , <= without incurring undefined behavior unless they point to elements in the same array or to an imaginary element immediately following the array.

Can we assign a void pointer to an entire pointer?

A pointer to void does not need dereferencing, infact, dereferencing a void pointer is illegal. You can obviously cast any pointer to a void pointer, and cast a void pointer to any other pointer type. That’s why: void *b = “hello world”; worked, so did char *a = b and then printing a out.

Can a void pointer point to a void pointer?

A void pointer is a pointer to anything. It is a generic pointer that doesn’t have a particular type. It can also have the value NULL in which case it doesn’t point to anything.

Can you cast a void pointer?

A void pointer is a pointer that has no associated data type with it. A void pointer can hold address of any type and can be typcasted to any type.

Can you compare pointers of different types?

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. 2).

How do you compare the value of a pointer?

When two pointers are compared, the result depends on the relative locations in the address space of the objects pointed to. If two pointers to object types both point to the same object, or both point one past the last element of the same array object, they compare equal.

Can we typecast void into int *?

You’re return ing the value of int sum by setting a void * address to it. In this case, the address is not valid. But, if you keep that in mind and get the value of sum by casting a void * to int it will work.

What is dangling pointer in C?

A dangling pointer is a pointer that occurs at the time when the object is de-allocated from memory without modifying the value of the pointer. A void pointer is a pointer that can point to any data type. It points to the deleted object.

Can we assign null to void pointer?

A void pointer is a pointer that can point to any type of object, but does not know what type of object it points to. A void pointer must be explicitly cast into another type of pointer to perform indirection. A void pointer can be a null pointer.

How do you assign a void pointer?

Now, we want to assign the void pointer to integer pointer, in order to do this, we need to apply the cast operator, i.e., (int *) to the void pointer variable. This cast operator tells the compiler which type of value void pointer is holding.

How do I assign 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.