Question

Write In C program

Bart Simpson is a pharmacist and likes to handle his customers' request as soon as possible. The customer who comes first get their prescription filled first. Write a menu-based program that helps Bart Simpson fill prescription order queue shown here: Name Angie Bertha Charlie Medication Lipitor Nexium Epogen The prescription queue is empty when the program starts. The menu should be as follows. Your choice is managed by switch statement and each choice requires a separated function except choice 0) ) Exit program. 1) Clear screen. 2) Display all orders. 3) Enqueue an order. 4) Dequeue an order. Enter a choice. 0) Exit program ocess returned e (exe) ress any key to continue 1) Clear screen Clears the screen and re-display the menu 2) Display all orders. Displays all orders in the queue and the number of total orders. nter a choice choice Lipitor Nexium Epogen ame ngie ertha harlie Total orders: 3 3) Enqueue an order Adds an order to the queue

Answer 1

#include <stdio.h>
#include <stdlib.h>
#define TRUE 1
#define FALSE 0
#define FULL 10
#include<string.h>
#include<conio.h>
int c=0;
struct node
{
char name[50];
char medication[50];
struct node *next;
};
typedef struct node node;

struct queue
{
int count;
node *front;
node *rear;
};
typedef struct queue queue;

void initialize(queue *q)
{
q->count = 0;
q->front = NULL;
q->rear = NULL;
}

int isempty(queue *q)
{
return (q->rear == NULL);
}

void enqueue(queue *q)
{
   char name[50],medication[50];
if (q->count < FULL)
{   fflush(stdin);
   printf("\nEnter Name");
   gets(name);
   fflush(stdin);
  
   printf("\n Enter medication");
   gets(medication);
node *tmp;
tmp =(struct node*) malloc(sizeof(node));
strcpy(tmp->name,name);
strcpy(tmp->medication,medication);
  
  
tmp->next = NULL;
if(!isempty(q))
{
q->rear->next = tmp;
q->rear = tmp;
}
else
{
q->front = q->rear = tmp;
}
q->count++;
}
else
{
printf("List is full\n");
}
}

void dequeue(queue *q)
{
node *tmp;
//int n = q->front->data;
tmp = q->front;
q->front = q->front->next;
q->count--;
free(tmp);
// return(n);
}

void display(node *head)
{
if(head == NULL)
{
printf("NULL\n");
}
else
{
  
printf("\n%s\t%s", head -> name,head -> medication);
  
display(head->next);
  
}
  
  
  
}

int main()
{
   char name[50];
   char a;
   int ch;
   char medication[50];
queue *q;
a='y';
q = malloc(sizeof(queue));
initialize(q);

while (a=='y')
{
  
   printf("\n 0)Exit Program");
   printf("\n 1)Clear Screen");
   printf("\n 2)Display All Orders");
   printf("\n 3)Enqueue Order ");
   printf("\n 4)Dequeue Order ");
   printf("\nEnter Choice");
   scanf("%d",&ch);
   switch(ch)
   {
       case 0:
           exit(0);
           break;
       case 1:
           {
           //   clrscr();// it will not work in DEV C please don't uncomment it in DEV C compiler
               }
           case 2:
               {
                   printf("\nName\tChoice\n");
               display(q->front);  
                   printf("Total Orders %d",q->count);
                   break;
               }
           case 3:
               {
                  
                   enqueue(q);
                   break;
                  
               }
           case 4:
               {
                   dequeue(q);
                   break;
                  
               }
           default:
               {
                   printf("\nInvalid Choice");
                   break;
               }
              
       }
  
  
       printf("\nDo you want to continue...(y/n)")   ;
       a=getch();      
              
          
          
       }   
       return 0;
  
  
   }   
  
  
  

- cExecutingl - Dev-C++5.11 CAUsers dell\Documentsiqq.exe Enter nedicationlipitor u want to continue. <y/n> TDM-GCC 4.9.2 32-bit Raleana DExit Progran 1Clear Screen 2Display All Orders 3Enqueue Order 4 Dequeue Order Enter Choice3 nter Nane Bertha Enter nedicationNexiun u want to continue. <y/n> DExit Progran 1Clear Screen 2Display All Orders 3Enqueue Order 4 Dequeue Order Enter Choice3 nter NaneCharlie Enter nedicationEpogen u want to continue. <y/n> DExit Progran 1Clear Screen 2Display All Orders 3Enqueue Order 4 Dequeue Order Enter Cho ice2 Choice ngie Lipitor Bertha Nexiun harlie EpogenNULL otal Orders 3 Do you uant to continue.. .<y/n) second 4:45 AM 4/28/2019