General Talk on Pointers

General Talk on Pointers and memory

Ch. 17.3 ,[object Object],[object Object],[object Object]

memory in your computer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

memory in your computer ,[object Object],[object Object],[object Object],[object Object]

Declare a variable ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Addresses to Places in memory ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

int * myIntPtr = & myInt; ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

int * myIntPtr = & myInt; ,[object Object],[object Object],[object Object],[object Object],[object Object]

int * myIntPtr = & myInt; ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dereferencing a Pointer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Derefencing Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Pointers to a thing are not the same as the thing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

sizeof ,[object Object],[object Object]

sizeof ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Null Pointer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Null Pointer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Testing for the Null Pointer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What happens when you declare a variable? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Industrial Applications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Solution: Dynamic allocation of Memory ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dynamic Allocation of Memory ,[object Object],[object Object],[object Object],[object Object]

What happens when you create a new object? ,[object Object],[object Object],[object Object]

A little bit of Architecture ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How to allocate the code portion? ,[object Object],[object Object],[object Object],[object Object]

How to allocate the static portion? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How to allocate the stack portion? ,[object Object],[object Object],[object Object],[object Object]

The Stack : some more detail ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Why is it called a stack? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Stack example: vectors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

One stack operation on a vector ,[object Object]

Functions on a Stack ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Local Variables in the Stack Frame ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Stack of Dishes Analogy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

At the end of a Function ,[object Object],[object Object],[object Object],[object Object],[object Object]

The function's stack frame is gone ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

call by Reference: Pointers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Code , Static and Stack ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Where do those records come from? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Heap ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

New ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Pieces of the Syntax ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

It's on the Heap. So What? ,[object Object],[object Object],[object Object],[object Object]

More Images: the Stack ,[object Object]

More Images: Heap and Stack ,[object Object]

General Talk on Pointers

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General Talk on Pointers