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Questions and Answers
What do pointer variables store?
What do pointer variables store?
- The value of an object
- The size of an object
- The address of where another object resides (correct)
- The name of an object
What is the purpose of pointer variables?
What is the purpose of pointer variables?
- To store the value of an object
- To store the address where another object resides (correct)
- To create a linked list
- To dynamically allocate memory
What data structure is created when each object has a link to the next object through a pointer variable?
What data structure is created when each object has a link to the next object through a pointer variable?
- A linked list (correct)
- An array
- A stack
- A queue
What is the advantage of using dynamic memory allocation?
What is the advantage of using dynamic memory allocation?
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Why is dynamic memory allocation useful and necessary for more complicated classes?
Why is dynamic memory allocation useful and necessary for more complicated classes?
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What is the IntCell class used for?
What is the IntCell class used for?
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Study Notes
- Pointer variables store the address where another object resides
- They are used in many data structures
- Storing each item in a separate noncontiguous piece of memory is common
- Each object has a link to the next object, which is a pointer variable
- This creates a linked list
- Pointers are used to dynamically allocate memory
- The IntCell class is used to illustrate dynamic memory allocation
- Dynamic memory allocation is useful and necessary for more complicated classes
- The new version of the IntCell class is shown in Figure 1.11
- Insertion into a contiguous array requires relocation of many items
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