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head = (node *)malloc(sizeof(node)); which returns a pointer to a structure of type node that has been type defined earlier. The linked list is then created by the function create. The function requests for the number to be placed in the current node that has been created. If the value assigned to the current node is –999, then null is assigned to the pointer variable next and the list ends. Otherwise, memory space is allocated to the next node using again the malloc function and the next value is placed into it. Not that the function create calls itself recursively and the process will continue until we enter the number -999. The items stored in the linked list are printed using the function print which accept a pointer to the current node as an argument. It is a recursive function and stops when it receives a NULL pointer. Printing algorithm is as follows; 1. Start with the first node. 2. While there are valid nodes left to print a) print the current item and b) advance to next node Similarly, the function count counts the number of items in the list recursively and return the total number of items to the main function. Note that the counting does not include the item -999 (contained in the dummy node).

head = (node *)malloc(sizeof(node)); which returns a pointer to a structure of type node that has been type defined earlier. The linked list is then created by the function create. The function requests for the number to be placed in the current node that has been created. If the value assigned to the current node is –999, then null is assigned to the pointer variable next and the list ends. Otherwise, memory space is allocated to the next node using again the malloc function and the next value is placed into it. Not that the function create calls itself recursively and the process will continue until we enter the number -999. The items stored in the linked list are printed using the function print which accept a pointer to the current node as an argument. It is a recursive function and stops when it receives a NULL pointer. Printing algorithm is as follows; 1. Start with the first node. 2. While there are valid nodes left to print a) print the current item and b) advance to next node Similarly, the function count counts the number of items in the list recursively and return the total number of items to the main function. Note that the counting does not include the item -999 (contained in the dummy node).

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Write c/c++ program to create a linear linked list interactively and print out the list and the total number of items in the list. Follow instructions from following image

head = (node *)malloc(sizeof(node)); which returns a pointer to a structure of type node that has been type defined earlier. The linked list is then created by the function create. The function requests for the number to be placed in the current node that has been created. If the value assigned to the current node is -999, then null is assigned to the pointer variable next and the list ends. Otherwise, memory space is allocated to the next node using again the malloc function and the next value is placed into it. Not that the function create calls itself recursively and the process will continue until we enter the number -999. The items stored in the linked list are printed using the function print which accept a pointer to the current node as an argument. It is a recursive function and stops when it receives a NULL pointer. Printing algorithm is as follows; 1. Start with the first node. 2. While there are valid nodes left to print a) print the current item and b) advance to next node Similarly, the function count counts the number of items in the list recursively and return the total number of items to the main function. Note that the counting does not include the item -999 (contained in the dummy node).
Transcribed Image Text:head = (node *)malloc(sizeof(node)); which returns a pointer to a structure of type node that has been type defined earlier. The linked list is then created by the function create. The function requests for the number to be placed in the current node that has been created. If the value assigned to the current node is -999, then null is assigned to the pointer variable next and the list ends. Otherwise, memory space is allocated to the next node using again the malloc function and the next value is placed into it. Not that the function create calls itself recursively and the process will continue until we enter the number -999. The items stored in the linked list are printed using the function print which accept a pointer to the current node as an argument. It is a recursive function and stops when it receives a NULL pointer. Printing algorithm is as follows; 1. Start with the first node. 2. While there are valid nodes left to print a) print the current item and b) advance to next node Similarly, the function count counts the number of items in the list recursively and return the total number of items to the main function. Note that the counting does not include the item -999 (contained in the dummy node).
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