this is the program instructions. I am so close but I do not know what is wrong.

Question

this is the program instructions. I am so close but I do not know what is wrong. Can someone help me please? I will make sure to thumbs up your answer. Thank you SO SO much

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>

#define NAME_LEN 30
struct dog{
   int number;
   char dog_name[NAME_LEN+1];
   char owner_last_name[NAME_LEN+1];
   char breed[NAME_LEN+1];
   struct dog *next;
};

struct dog *append(struct dog *list);
void search(struct dog *list);
void print(struct dog *list);
void clear(struct dog *list);
int read_line(char str[], int n);

/**********************************************************
* main: Prompts the user to enter an operation code, *
* then calls a function to perform the requested *
* action. Repeats until the user enters the *
* command 'q'. Prints an error message if the user *
* enters an illegal code. *
**********************************************************/
int main(void)
{
char code;

struct dog *dog_list = NULL;
printf("Operation Code: a for appending to the list, s for finding a dog"
   ", p for printing the list; q for quit. ");
for (;;) {
printf("Enter operation code: ");
scanf(" %c", &code);
while (getchar() != ' ') /* skips to end of line */
;
switch (code) {
case 'a': dog_list = append(dog_list);
break;
case 's': search(dog_list);
break;
case 'p': print(dog_list);
break;
case 'q': clear(dog_list);
       return 0;
default: printf("Illegal code ");
}
printf(" ");
}
}

struct dog *append(struct dog *list){
   int num;
   char dogName[NAME_LEN+1];
   char ownerLastName[NAME_LEN+1];
   char breed1[NAME_LEN+1];
  
   //gets user info and scans it
   printf("Enter number:");
   scanf("%d", &num);

   //uses getchar to remove the character
   getchar();

   printf("enter dogs name");
   fgets(dogName,NAME_LEN+1, stdin);
   printf("whats the dogs breed");
   fgets(breed1,NAME_LEN+1, stdin);
   printf("whats the owners last name");
   fgets(ownerLastName,NAME_LEN+1, stdin);
  
   struct dog *temp = (struct dog*)malloc(sizeof(struct dog));
  
   //if there is nothing inside list, puts num inside, and copies
   //dogname, breed and so on, and puts next temp value to be null.
   if (list ==NULL){
       temp->number=num;
       strcpy(temp->dog_name, dogName);
       strcpy(temp->breed, breed1);
       strcpy(temp->owner_last_name, ownerLastName);
       temp->next = NULL;
       return temp;
   }
   //if list has numbers inside then perform this
   else
   {
   int bool = 0;
  
   //checks if dog is already in system with using temp.
   temp = list;
   while (temp!= NULL){
       if (temp ->number == num)
           bool =1;
       temp = temp->next;
   }
   if (bool==1){
       printf("Dog is already in system!");
       return list;
   }
   struct dog * temp1 = (struct dog*)malloc(sizeof(struct dog));
   temp1->number = num;
   strcpy(temp1->dog_name, dogName);
   strcpy(temp1->breed, breed1);
   strcpy(temp1->owner_last_name, ownerLastName);
   temp1->next = NULL;
   temp = list;

   //while loop to go until end of list
   while (temp->next !=NULL){
       temp = temp->next;
   }
   temp->next = temp1;
   return list;
   }
}

void search (struct dog *list)
{
   //new char name dogName so i can get from user with extra room for null temrinating
   char dogName [NAME_LEN+1];
   printf("Enter dog’s name please");
   //stores it in
   fgets(dogName, NAME_LEN+1, stdin);
  
   //temp in order to compare and search.
   struct dog *temp= list;
   while (temp != NULL){
       if (!strcmp(temp->dog_name, dogName)){
           printf("number: %d Dog name: %s Breed: %s Owners name: %s ",
           temp->number, temp->dog_name, temp->breed, temp->owner_last_name);
       }
       //goes on to next dog number
       temp= temp->next;
   }
}
void print(struct dog *list){

   if (list==NULL){
       printf("There is no records of that");
   }
   struct dog * temp = list;
  
   //prints each record with while loop and ->next
   while (temp !=NULL){
       printf("number: %d Dog name: %s Breed: %s Owners name: %s ",
       temp->number, temp->dog_name, temp->breed, temp->owner_last_name);

       //goes on to next dog number
       temp= temp->next;
   }

}
void clear(struct dog *list)
{
   struct dog * temp = list;
   while (temp !=NULL)
   {
       temp= temp->next;
       free(temp);
   }

}

int read_line(char str[], int n)
{
int ch, i = 0;

while (isspace(ch = getchar()))
;
str[i++] = ch;
while ((ch = getchar()) != ' ') {
if (i < n)
str[i++] = ch;
  
}
str[i] = '';
return i;
}

The program dogs.c maintains records for canine patients at an animal hospital. Each dog's record has a name, a breed, a patient number, and owner's last name. Complete the program so it uses a dynamically allocated linked list to store the records and contains the following functions: 1. append: ask the user to enter patient number, dog's name, dog's breed, and owner's last name, then add the dog tothe end of the linked list. a. It should check whether the dog has already existed by patient number. If so, the function should print a message and exit. b. f the dog does not exist, allocate memory for the dog, store the data, and append the dog to the end of the linked list. c. If the list is empty, the function should return the pointer to the newly created dog d. Otherwise, add the dog to the end of the linked list and return the pointer to the linked list. 2. search: find the dog by name, print all the dog's information that matches the name. If the dog is not found, print a message 3. print: print the name and number of all the dogs 4. clear: when the user exists the program, all the memory allocated for the linked list should be deallocated

Explanation / Answer

#include &lt;stdio.h&gt;
#include &lt;string.h&gt;
#include &lt;ctype.h&gt;
#include &lt;stdlib.h&gt;
#define NAME_LEN thirty
struct dog;

struct dog *append(struct dog *list);
void search(struct dog *list);
void print(struct dog *list);
void clear(struct dog *list);
int read_line(char str[], int n);
/**********************************************************
* main: Prompts the user to enter Associate in Nursing computer code, *
* then calls a operate to perform the requested *
* action. Repeats till the user enters the *
* command 'q'. Prints a slip message if the user *
* enters Associate in Nursing smuggled code. *
**********************************************************/
int main(void)
information and scans it
printf("Enter number:");
scanf("%d", &amp;num);
//uses getchar to get rid of the character
getchar();
printf("enter dogs name");
fgets(dogName,NAME_LEN+1, stdin);
printf("whats the dogs breed");
fgets(breed1,NAME_LEN+1, stdin);
printf("whats the house owners last name");
fgets(ownerLastName,NAME_LEN+1, stdin);
  
struct dog *temp = (struct dog*)malloc(sizeof(struct dog));
  
//if there's nothing within list, puts num within, and copies
//dogname, breed so on, and puts next temporary worker price to be null.
if (list ==NULL)come temp;
}
//if list has numbers within then perform this
else
victimisation temporary worker.
temporary worker = list;
whereas (temp!= NULL){
if (temp -&gt;number == num)
bool =1;
temporary worker = temp-&gt;next;
}
if (bool==1)therefore i will get from user with additional area for null temrinating
char dogName [NAME_LEN+1];
printf("Enter dog’s name please");
//stores it in
fgets(dogName, NAME_LEN+1, stdin);
  
//temp so as to check and search.
struct dog *temp= list;
whereas (temp != NULL)

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