Pointers

• Used to hold the address of a given object.
• T* declares a pointer to an object of type T.
• Used in Pass By Address for passing data into functions through the function's parameters.
• dereferencing - used to refer to the object pointed to by the pointer.
• * operator is used to dereference a pointer.
• & - "address of" operator is used to get the address of a variable.
• const pointers
• may want to read right-to-left
• null pointer
• pointer containing the value zero
• NO object is allocated at address 0.
• Used to indicate that the pointer does not refer to an object.
• sometimes the variable NULL is used:
• const int NULL = 0;
• array declaration - name of array acts as a pointer to the first element of the array.

int MyArray[10];

• Blackjack game example

Dynamic memory allocation

• new
• delete
• What is one way to resize an array?
• In-class example

Additional Notes