
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Explain the following three types of pointers: physical address pointer, relative address pointer, and logical key pointer.
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- What does the term "pointer arithmetic" mean?arrow_forward3. We've seen variable types that store characters, integers and floating point numbers. In a very similar fashion, addresses can be are stored. A variable that stores an address value is called a pointer variable, or simply a pointer. Let's take a look at the following example. As you may have noticed, we did not directly assign anything to num, c, count, and salary. Instead, we used the pointers to assign values to where those pointers were pointing. What does this program do? Can you make changes to assign anything to num, c, count, and salary and print them using pointers numptr, cptr, countptr, and salaryptr. #include using namespace std; int main() { int num; char c; int count; float salary; // Declaring bunch of pointers that point to nothing (point to null) // declare a pointer variable to an integer // declare a pointer variable to a character // declare a pointer variable to an integer int char *numptr; *cptr; *countptr; *salaryptr; // declare a pointer variable to a float…arrow_forward. C supports three (and only three) forms of pointer arithmetic: Adding an integer to a pointer, subtracting an integer from a pointer, and subtracting one pointer from another. What is the one pointer arithmetic operation that C does NOT support?arrow_forward
- How do "pointers" or "references" get managed during the serialization of objects in memory?arrow_forwardThe address operator O is a variable that holds an address all of these O returns the memory address of a variable dereferences a pointer and allows access to the value of the variable the pointer points toarrow_forwardThis inquiry pertains to the inherent design challenges associated with the utilization of pointers. The majority of computer programming language pointers are restricted to pointing to a single type of variable?arrow_forward
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