DS MINI PROJECT

AIM: To implement an ice-cream parlour sales system using data structures in

C.

FEATURES:
● Ice Cream menu and ordering
● Order tracking system (Can view pending and completed orders)
● Admin login and privilege to complete the order
● Admin can edit the menu (add or delete the ice creams)
● Admin can view the inventory and daily sales

DATA STRUCTURES USED:

1. Linked List
● 2 Linked Lists used: One for menu items and one for completed
orders
● Add and delete functions of linked list used to add and delete items
and complete the orders
● To display the menu
2. Queue
● Queue used for getting pending orders
● Enqueue and Dequeue functions of queue are used
● Display function is used to display the pending orders

TEAM MEMBERS
HARSH VARTAK (60004180028)
HRISHIKESH AVANOOR (60004180033)
HIMANSHU SANKLECHA(60004180032)

CODE:
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<time.h>
#include<string.h>
#include<malloc.h>
#include<ctype.h>
#include<process.h>
#include<windows.h>

static int orders=100;

/*for linked list*/

struct item{
char name[11];
int price;
int orders;
struct item *next;
};

/*for queue of orders*/

struct queue{
int orderNo;
struct queue *next;
};

struct complete{
int orderNo;
struct queue *next;
};

struct item *start=NULL;

struct complete *c_start;
struct queue *head=NULL;
struct queue *tail=NULL;

//basic functions
void addItem(char n[],int p);
void enqueue(int orderNo);
int dequeue(); //returns order no.
void addCompleted(int orderNo);
int itemsSize();
int queueSize();

void create();
void menu();
void takeOrder();
void showStatus();

//admin functions
void addItem_admin();
void deleteItem();
void adminStatus();
void adminLogin();
void changeStatus();
void gotoxy(int x,int y);
void welcome();
int peekQueue();
int itemsSize(){
int c=0;
struct item *ptr;
ptr=start;
while(ptr!=NULL){
c++;
ptr=ptr->next;
}
return c;
}

int queueSize(){
int c=0;
struct queue *ptr;
ptr=head;
while(ptr!=NULL){
c++;
ptr=ptr->next;
}
return c;
}

void addItem(char n[],int p){

struct item *ptr,*new_item;
new_item=(struct item *)malloc(sizeof(struct item));
new_item->price=p;
strcpy(new_item->name,n);
new_item->orders=0;
new_item->next=NULL;

if(start==NULL){
start=new_item;
}else{
ptr=start;
while(ptr->next!=NULL){
ptr=ptr->next;
}
ptr->next=new_item;
}
}

void enqueue(int orderNo){

struct queue *new_order;
new_order=(struct queue *)malloc(sizeof(struct queue));
new_order->orderNo=orderNo;
new_order->next=NULL;
if(head==NULL){ //queue is empty
head=new_order;
tail=head;
}else{ //only one order is in queue
tail->next=new_order;
tail= tail->next;
}
}

void welcome(){
int i,k=6,r,q;
 gotoxy(40,5);
for(i=0;i<=50;i++)
printf("*");
for(i=0;i<20;i++)
{
gotoxy(40,k);
printf("*");
gotoxy(90,k);
printf("*");
printf("\n");
k++;
}
gotoxy(41,25);
for(i=0;i<=49;i++)
printf("*");
gotoxy(45,7);
printf("**** WELCOME TO 3H's ICE CREAM PARLOUR****");
gotoxy(50,8);
printf("what we offer?");
gotoxy(45,9);
printf("->fast service");
gotoxy(45,10);
printf("->hygiene");
gotoxy(45,11);
printf("->Natural");
gotoxy(45,12);
printf("->order tracking system");
gotoxy(50,14);
printf("menu is being loaded....");
gotoxy(50,15);
for(r=0;r<=20;r++)
{
for(q=0;q<=10000000;q++);
printf("%c",177);
}
gotoxy(50,16);
printf("press any key to start");

getch();
}

int dequeue(){
struct queue *ptr;
if(head==NULL){ //queue empty
return -1;
}else if(head==tail){ //single element
ptr=head;
head=NULL;
tail=NULL;
}else{
ptr=head;
head=head->next;
}
return ptr->orderNo;
}

void addCompleted(int orderNO){

 struct complete *new_complete ;
new_complete =(struct complete *)malloc(sizeof(struct complete));
new_complete->orderNo=orderNO;
new_complete->next=c_start;
c_start=new_complete;
}

void addItem_admin(){

char n[10];
int p;
printf("enter name of the ice cream\n");
scanf("%s",&n);
printf("enter amount\n");
scanf("%d",&p);
addItem(n,p);
printf("%s was added in the menu",n);
getch();
}

void deleteItem(){
int k=1,choice,p;
struct item *ptr,*pre;
ptr=start;
printf("********************************\n");
printf("sr no.\t flavours\t price\n");
printf("********************************\n");
while(ptr!=NULL){

printf("%d\t %s\t %d rs\n\n",k,ptr->name,ptr->price);

ptr=ptr->next;
k++;
}
ptr=start;
printf("select the item to delete\n");
scanf("%d",&choice);
if(choice<=itemsSize() && choice>0){
choice--;
while(choice>0){
choice--;
pre=ptr;
ptr=ptr->next;
}
printf("are you sure you want to delete %s? (1/0)\n\n",ptr->name);
scanf("%d",&p);
if(p==1){
pre->next=ptr->next;
free(ptr);
printf("item was deleted\n");
printf("\npress any key to return\n");
getch();
}
else if(p==0)
{
printf("item was not deleted\n");
printf("\npress any key to return\n");
getch();
 system("cls");
}
}
else{
printf("please select between 1 to %d\n",itemsSize());
deleteItem();
}
}

void create(){
int i=0;
char name[100];
char arr_n[11][100]={"mango ","sitaphal ","litchi ","coconut ","jackfruit ","kesar pista","chickoo
","chocobite ","kaju kismis","anjeer "};
int arr_p[]={60,50,50,70,50,60,70,50,70,70};
for(i=0;i<10;i++){
strcpy(name,arr_n+i);
addItem(name,arr_p[i]);
}
}

void menu(){
int k=1;
struct item *ptr;
ptr=start;
printf("********************************\n");
printf("sr no.\t flavours\t price\n");
printf("********************************\n");
while(ptr!=NULL){
printf("%d\t %s\t %d rs\n\n",k,ptr->name,ptr->price);
ptr=ptr->next;
k++;
}
takeOrder();
getch();
}

void takeOrder(){
struct item *iceCream;
iceCream=start;
int choice,orderNO;
char again;
printf("enter ice cream no.\n\n");
scanf("%d",&choice);

if(choice<=itemsSize() && choice>0){

choice--;
while(choice>0){
choice--;
iceCream=iceCream->next;

}
printf("you selected %s\n\n",iceCream->name);
iceCream->orders+=1;
orderNO=orders++;
printf("your order no is %d\n",orderNO);
enqueue(orderNO);
 printf("\npress any key to return\n\n");

}else{
printf("please select between 1 to %d\n\n",itemsSize());
takeOrder();
}
}

void showStatus(){
char c;
struct queue *ptr;
ptr=head;
printf("pending\n");
while(ptr!=NULL){
printf("%d\n",ptr->orderNo);
ptr=ptr->next;
}

ptr=c_start;
printf("\ncompleted\n");
while(ptr!=NULL){
printf("%d\n",ptr->orderNo);
ptr=ptr->next;
}
printf("\n\npress any key\n\n");
getch();
}

void adminStatus(){
struct item *iceCream;
int price,orders,total,sale=0;
char name[11];
iceCream=start;
printf("product price orders total\n");
while(iceCream!=NULL){
strcpy(name,iceCream->name);
price =iceCream->price;
orders=iceCream->orders;
total = price*orders;
printf("%s \t%d\t%d\t%d\n",name,price,orders,total);
sale+=total;
iceCream=iceCream->next;
}
printf("total sale = %d\n",sale);
printf("\npress any key to return\n");
getch();
}

void adminLogin(){
char pass[10];
char password[]="qwerty";
int result=-1,c;
int p=0;
printf("enter password for admin\n");
do{
pass[p]=getch();
if(pass[p]!='\r'){
 printf("*");
}
p++;
}while(pass[p-1]!='\r');
pass[p-1]='\0';
result=strcmp(pass,password);
if(result!=0){
printf("incorrect password\n");
}else{
do{
system("cls");
printf("\n\n1.inventory\t2.add item\t3.delete item\t4.change status \t5.logout\n");
scanf("%d",&c);
switch(c){
case 1:adminStatus();
break;
case 2:addItem_admin();
break;
case 3:deleteItem();
break;
case 4:changeStatus();
break;
case 5:break;
default:;
}
}while(c!=5);
}
}

void changeStatus(){
int c=-1,c1=0,orderNo;
system("cls");
showStatus();

while((c!=0) && (queueSize()>0)){

c1=peekQueue();
if(c!=1){
printf("press 1 to complete order %d \n 0 to exit\n",c1);
fflush(stdout);
scanf(" %d",&c);
}
if (c==1){
orderNo=dequeue();
addCompleted(orderNo);
system("cls");
printf("order no %d was completed\n",orderNo);
showStatus();
if(queueSize()<=0){
printf("no pending orders\n\n");
return ;
}
}else{
break;
}
c1=peekQueue();
printf("press 1 to complete order %d \n 0 to exit\n",c1);
fflush(stdout);
 scanf("%d",&c);
}
}

void gotoxy(int x,int y){

COORD coord;
HANDLE a;
coord.X=x;
coord.Y=y;
a=GetStdHandle(STD_OUTPUT_HANDLE);

SetConsoleCursorPosition(a,coord);
}

int peekQueue(){
return head->orderNo;

int main()
{
int c;
welcome();
create();

do{
system("cls");
printf("********main menu*********\n\n");
printf("items in menu %d \t pending orders %d\n\n",itemsSize(),queueSize());
printf(" 1. MENU AND ORDER\n\n 2. ORDER STATUS\n\n 3. ADMIN LOGIN\n\n 4.
EXIT\n\n");
printf(" enter choice\n");
scanf("%d",&c);
switch(c)
{
case 1: menu();
break;
case 2: showStatus();
break;
case 3: adminLogin();
break;

case 4:break;
}
}
while(c!=4);

OUTPUT: