1. Pointers & Objects

2. Objects on Stack Objects created without new are on the stack: 2000 p1
Address
Identifier
Value
2000 p1
Point
1996
1992
1988
1984
1980
1976 …
1000
999
998
997
996
995

3. Objects on Heap Objects created with new are on heap
Use pointer to keep track of
Address
Identifier
Value
2000 pp
1000
1996
1992
1988
1984
1980
1976 …
Point
999
998
997
996
995

4. Objects on Heap Objects can be on the heap:
But member access is tricky

5. Pointer Member Access Precedence : * comes after .
*pp.getX() == *(pp.getX())
Ask memory address to getX???
Address
Identifier
Value
2000 pp
1000
1996
1992
1988
1984
1980
1976 …
Point
999
998
997
996
995

6. Pointer Member Access Precedence corrected with ( )
Go to point pp points to, ask it to getX()
Address
Identifier
Value
2000 pp
1000
1996
1992
1988
1984
1980
1976 …
Point
999
998
997
996
995

7. Pointer Member Access
(*pointer).member
Gets ugly

8. Pointer Member Access (*pointer).member -> : pointer member access
Gets ugly
-> : pointer member access
Dereference pointer, access member in one

9. Pointer Member Access -> : pointer member access Much better for:
Dereference pointer, access member in one
Much better for: