I don't understan off a pointer c++😑😑😑😑😑

Answer 1

Pointer is a variable that stores the address of another variable. Example :
int *a; char *a;
Where, * is used to denote that ''a'' is pointer variable and not a normal variable.
In this context, the asterisk is not a multiplication

Key points to remember about pointers:
# Normal variable stores the value whereas pointer variable stores the address of the variable.

# The content of the pointer always be a whole number i.e. address.

# Always pointer is initialized to null, i.e. int *p = null.

# The value of null pointer is 0.

# & symbol is used to get the address of the variable.

# * symbol is used to get the value of the variable that the pointer is pointing to.

# If pointer is assigned to NULL, it means it is pointing to nothing.

# Two pointers can be subtracted to know how many elements are available between these two pointers.

# But, Pointer addition, multiplication, division are not allowed.

# The size of any pointer is 2 byte (for 16 bit compiler).

Since pointers only hold addresses, when we assign a value to a pointer, the value has to be an address. To get the address of a variable, we can use the address-of operator (&)

Example program for pointer:
#include <iostream>
using namespace std;
int main()
{
int *ptr, q;
  q = 50;

  /* address of q is assigned to ptr */
  ptr = &q;

  // prints address held in ptr, which is &q
  cout << ptr;

  /* display q's value using ptr variable */
  cout << *ptr;
  return 0;
}
sorry if I made a spell error...

Answer 2

okay thanks

Answer 3

hallo Hmei27