diff --git a/Medical-Store-in-C/Medical-Store.c b/Medical-Store-in-C/Medical-Store.c
new file mode 100644
index 0000000..37f1344
--- /dev/null
+++ b/Medical-Store-in-C/Medical-Store.c
@@ -0,0 +1,1260 @@
+# include <stdio.h>
+# include <malloc.h>
+#include<string.h>
+#include<conio.h>
+
+struct node
+{
+	int id,quantity,dd,mm,yy,dd1,mm1,yy1;
+    float price;
+    char medicine_name[30],company[30],info[100];
+    char patient_name[30],doctor_name[30];
+    long long int contact_no;
+	struct node *lchild;
+	struct node *rchild;
+}*root;
+
+typedef struct node1
+{
+	int id,quantity,dd,mm,yy,dd1,mm1,yy1;
+    float price;
+    char medicine_name[30],company[30],info[100];
+    char patient_name[30],doctor_name[30],mfg_date[20],exp_date[20];
+    long long int contact_no;
+	struct node1 *next;
+}node1;
+
+
+void login();
+void find(int item,struct node **par,struct node **loc);
+void insert(int item);
+void case_a(struct node *par,struct node *loc );
+void case_b(struct node *par,struct node *loc);
+void case_c(struct node *par,struct node *loc);
+int del(int item);
+int preorder(struct node *ptr);
+void inorder(struct node *ptr);
+void postorder(struct node *ptr);
+void display(struct node *ptr,int level);
+void search(int item);
+void modify(struct node *ptr);
+
+node1 *insert_loc(node1*,node1*);
+void create_queue();
+void del_queue();
+void display_queue(node1 *front);
+node1 *rear=NULL;
+node1 *front=NULL;
+node1 *p,*head;
+
+
+char username[20]="medical";
+char password[5]="g@10";
+char pass[4];
+char name[20];
+int i,n,x,j,ch,l;
+int dd,mm,yy,dd1,mm1,yy1;
+
+
+int main()
+{
+	login();
+	int choice,num;
+	struct node *tmp,*parent,*location;
+	root=NULL;
+	while(1)
+	{
+		printf("\n");
+		printf("1.Insert\n");
+		printf("2.Delete\n");
+		printf("3.Inorder Traversal\n");
+		printf("4.Preorder Traversal\n");
+		printf("5.Postorder Traversal\n");
+		printf("6.Display\n");
+		printf("7.Search\n");
+		printf("8.Modify\n");
+		printf("9.Create using queue\n");
+		printf("10.Display using queue\n");
+		printf("11.Insert using queue\n");
+		printf("12.Delete using queue\n");
+		printf("13.Quit\n");
+		printf("Enter your choice : ");
+		scanf("%d",&choice);
+
+		switch(choice)
+		{
+		 case 1:
+				printf("Enter the medicine id to be inserted : ");
+				scanf("%d",&num);
+				insert(num);
+				break;
+		 case 2:
+				printf("Enter the  medicine id to be deleted : ");
+				scanf("%d",&num);
+				del(num);
+				break;
+		 case 3:
+				printf("\n*****************************************");
+				printf("\nid\tquantity\tprice\tmedicine_name\tcompany");
+				printf("\tinfo\tpatient_name\tdoctor_name\tmfg_dt\t         exp_dt         contact");
+				inorder(root);
+				break;
+		 case 4:
+
+				printf("\n*****************************************");
+				printf("\nid\tquantity\tprice\tmedicine_name\tcompany");
+				printf("\tinfo\tpatient_name\tdoctor_name\tmfg_dt\t         exp_dt         contact");
+				preorder(root);
+				break;
+		 case 5:
+
+				printf("\n*****************************************");
+				printf("\nid\tquantity\tprice\tmedicine_name\tcompany");
+				printf("\tinfo\tpatient_name\tdoctor_name\tmfg_dt\t         exp_dt         contact");
+				postorder(root);
+				break;
+		 case 6:
+				display(root,1);
+				break;
+		 case 7:
+				printf("Enter the medicine id to be searched : ");
+				scanf("%d",&num);
+				find(num,&parent,&location);
+				if(location!=NULL)
+				{
+					search(num);
+				}
+				else
+				{
+					printf("\nmedicine not found");
+				}
+				break;
+		case 8:
+				modify(root);
+				break;
+		case 9:
+				printf("Enter no. of medicines:");
+				scanf("%d",&n);
+				create_queue(n);
+				break;
+		case 10:
+				display_queue(front);
+				break;
+		case 11:
+				front= insert_loc(front,rear);
+				rear=rear->next;
+				n=n+1;
+				break;
+		case 12:
+				del_queue();
+				display_queue(front);
+				break;
+		case 13:
+				exit(0);
+				break;
+				default:
+				printf("Wrong choice\n");
+		}
+	}
+}
+
+
+void login()
+{
+  printf("\t\tEnter username:");
+  scanf("%s",name);
+    printf("\t\tEnter the password:");
+    //scanf("%s",pass);
+    i=0;
+    while(ch!=13)
+    {
+     //
+	 ch=getch();
+     pass[i]=ch;
+     i++;
+     printf("*");
+
+    }
+    pass[i-1]='\0';
+
+
+        if(strcmp(password,pass)==0 && strcmp(username,name)==0)
+        {
+            printf("\n\n\t\t WELCOME .......\n\n\n");
+
+         }
+        else
+        {
+          printf("\nYour system has been locked");
+          exit (0);
+        }
+}
+
+
+void find(int item,struct node **par,struct node **loc)
+{
+	struct node *ptr,*ptrsave;
+
+	if(root==NULL)  /*tree empty*/
+	{
+		*loc=NULL;
+		*par=NULL;
+		return;
+	}
+	if(item==root->id) /*item is at root*/
+	{
+		*loc=root;
+		*par=NULL;
+		return;
+	}
+	/*Initialize ptr and ptrsave*/
+	if(item<root->id)
+		ptr=root->lchild;
+	else
+		ptr=root->rchild;
+	ptrsave=root;
+
+	while(ptr!=NULL)
+	{
+		if(item==ptr->id)
+		{       *loc=ptr;
+			*par=ptrsave;
+			return;
+		}
+		ptrsave=ptr;
+		if(item<ptr->id)
+			ptr=ptr->lchild;
+		else
+			ptr=ptr->rchild;
+	 }/*End of while */
+	 *loc=NULL;   /*item not found*/
+	 *par=ptrsave;
+}/*End of find()*/
+
+void insert(int item)
+{   struct node *tmp,*parent,*location;
+int loop=0,loop1=0,loop2=0;
+	find(item,&parent,&location);
+
+	if(location!=NULL)
+	{
+		printf("Item already present");
+		return;
+	}
+
+	tmp=(struct node *)malloc(sizeof(struct node));
+	tmp->id=item;
+
+
+						printf("\nenter quantity:");
+						scanf("%d",&(tmp->quantity));
+						printf("\nenter price:");
+						scanf("%f",&(tmp->price));
+						printf("\nenter medicine name:");
+						scanf("%s",(tmp->medicine_name));
+						printf("\nenter company:");
+						scanf("%s",(tmp->company));
+						printf("\nenter info of medicine:");
+						scanf("%s",(tmp->info));
+						printf("\nenter patient name:");
+						scanf("%s",(tmp->patient_name));
+						printf("\nenter doctors name:");
+						scanf("%s",(tmp->doctor_name));
+
+                        while(loop==0)
+                        {
+                        printf("\n enter the mfg date(DD MM YY ):-");
+                        scanf("%d/%d/%d",&(tmp->dd),&(tmp->mm),&(tmp->yy));
+                        if(tmp->dd<=31 && tmp->mm<=12 && tmp->yy>2010 && tmp->yy<=2019)
+                            {
+                             loop=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop=0;
+                        }
+                        }
+
+                         while(loop1==0)
+                        {
+                        printf("\n enter the exp date(DD/MM/YY ):-");
+                        scanf("%d/%d/%d",&(tmp->dd1),&(tmp->mm1),&(tmp->yy1));
+                        if(tmp->dd1<=31 && tmp->mm1<=12 && tmp->yy1>2015 && tmp->yy1<=2025)
+                            {
+                             loop1=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop1=0;
+                        }
+                        }
+
+
+                        while(loop2==0)
+                            {
+                                printf("\n enter patient's contact number:-");
+                                scanf("%lld",&(tmp->contact_no));
+                                    if((tmp->contact_no)>7000000000 && (tmp->contact_no)<=9999999999)
+                                      {
+                                         loop2=1;
+                                      }
+                                     else
+                                      {
+                                          printf("please enter valid contact no.");
+                                          loop2=0;
+                                      }
+                                        }
+                tmp->lchild=NULL;
+                tmp->rchild=NULL;
+
+                if(parent==NULL)
+                    root=tmp;
+                else
+                    if(item<parent->id)
+                        parent->lchild=tmp;
+                    else
+                        parent->rchild=tmp;
+}/*End of insert()*/
+
+
+void case_a(struct node *par,struct node *loc )
+{
+	if(par==NULL) /*item to be deleted is root node*/
+		root=NULL;
+	else
+		if(loc==par->lchild)
+			par->lchild=NULL;
+		else
+			par->rchild=NULL;
+}/*End of case_a()*/
+
+void case_b(struct node *par,struct node *loc)
+{
+	struct node *child;
+
+	/*Initialize child*/
+	if(loc->lchild!=NULL) /*item to be deleted has lchild */
+		child=loc->lchild;
+	else                /*item to be deleted has rchild */
+		child=loc->rchild;
+
+	if(par==NULL )   /*Item to be deleted is root node*/
+		root=child;
+	else
+		if( loc==par->lchild)   /*item is lchild of its parent*/
+			par->lchild=child;
+		else                  /*item is rchild of its parent*/
+			par->rchild=child;
+}/*End of case_b()*/
+
+void case_c(struct node *par,struct node *loc)
+{
+	struct node *ptr,*ptrsave,*suc,*parsuc;
+
+	/*Find inorder successor and its parent*/
+	ptrsave=loc;
+	ptr=loc->rchild;
+	while(ptr->lchild!=NULL)
+	{
+		ptrsave=ptr;
+		ptr=ptr->lchild;
+	}
+	suc=ptr;
+	parsuc=ptrsave;
+
+	if(suc->lchild==NULL && suc->rchild==NULL)
+		case_a(parsuc,suc);
+	else
+		case_b(parsuc,suc);
+
+	if(par==NULL) /*if item to be deleted is root node */
+		root=suc;
+	else
+		if(loc==par->lchild)
+			par->lchild=suc;
+		else
+			par->rchild=suc;
+
+	suc->lchild=loc->lchild;
+	suc->rchild=loc->rchild;
+}/*End of case_c()*/
+int del(int item)
+{
+	struct node *parent,*location;
+	if(root==NULL)
+	{
+		printf("Tree empty");
+		return 0;
+	}
+
+	find(item,&parent,&location);
+	if(location==NULL)
+	{
+		printf("Item not present in tree");
+		return 0;
+	}
+
+	if(location->lchild==NULL && location->rchild==NULL)
+		case_a(parent,location);
+	if(location->lchild!=NULL && location->rchild==NULL)
+		case_b(parent,location);
+	if(location->lchild==NULL && location->rchild!=NULL)
+		case_b(parent,location);
+	if(location->lchild!=NULL && location->rchild!=NULL)
+		case_c(parent,location);
+	free(location);
+}/*End of del()*/
+
+int preorder(struct node *ptr)
+{
+	if(root==NULL)
+	{
+		printf("Tree is empty");
+		return 0;
+	}
+
+	if(ptr!=NULL)
+	{
+
+
+
+				printf("\n%d",(ptr->id));
+                printf("\t%d",(ptr->quantity));
+                printf("\t\t%.2f",(ptr->price));
+                printf("\t\t%s",(ptr->medicine_name));
+                printf("\t%s",(ptr->company));
+                printf("\t%s",(ptr->info));
+                printf("\t%s",(ptr->patient_name));
+                printf("\t\t%s",(ptr->doctor_name));
+                printf("\t\t%d/%d/%d",(ptr->dd),(ptr->mm),(ptr->yy));
+                printf("\t%d/%d/%d",(ptr->dd1),(ptr->mm1),(ptr->yy1));
+                printf("\t%lld",(ptr->contact_no));
+
+		preorder(ptr->lchild);
+		preorder(ptr->rchild);
+	}
+}/*End of preorder()*/
+
+void inorder(struct node *ptr)
+{
+	if(root==NULL)
+	{
+		printf("Tree is empty");
+		return;
+	}
+
+	if(ptr!=NULL)
+	{
+		inorder(ptr->lchild);
+
+
+
+				printf("\n%d",(ptr->id));
+                printf("\t%d",(ptr->quantity));
+                printf("\t\t%.2f",(ptr->price));
+                printf("\t\t%s",(ptr->medicine_name));
+                printf("\t%s",(ptr->company));
+                printf("\t%s",(ptr->info));
+                printf("\t%s",(ptr->patient_name));
+                printf("\t\t%s",(ptr->doctor_name));
+               printf("\t\t%d/%d/%d",(ptr->dd),(ptr->mm),(ptr->yy));
+                printf("\t%d/%d/%d",(ptr->dd1),(ptr->mm1),(ptr->yy1));
+                printf("\t%lld",(ptr->contact_no));
+
+
+		inorder(ptr->rchild);
+	}
+}/*End of inorder()*/
+
+void postorder(struct node *ptr)
+{
+	if(root==NULL)
+	{
+		printf("Tree is empty");
+		return;
+	}
+
+	if(ptr!=NULL)
+	{
+		postorder(ptr->lchild);
+		postorder(ptr->rchild);
+
+
+				printf("\n%d",(ptr->id));
+                printf("\t%d",(ptr->quantity));
+                printf("\t\t%.2f",(ptr->price));
+                printf("\t\t%s",(ptr->medicine_name));
+                printf("\t%s",(ptr->company));
+                printf("\t%s",(ptr->info));
+                printf("\t%s",(ptr->patient_name));
+                printf("\t\t%s",(ptr->doctor_name));
+                printf("\t\t%d/%d/%d",(ptr->dd),(ptr->mm),(ptr->yy));
+                printf("\t%d/%d/%d",(ptr->dd1),(ptr->mm1),(ptr->yy1));
+                printf("\t%lld",(ptr->contact_no));
+
+
+
+
+
+
+	}
+}/*End of postorder()*/
+
+void display(struct node *ptr,int level)
+{
+	int i;
+	if ( ptr!=NULL )
+	{
+		display(ptr->rchild, level+1);
+		printf("\n\n");
+		for (i = 0; i < level; i++)
+			printf("    ");
+
+	printf("%d,%s", ptr->id,ptr->medicine_name);
+
+		display(ptr->lchild, level+1);
+	}/*End of if*/
+}/*End of display()*/
+
+void search(int item)
+{
+	struct node *ptr;
+
+	if(root==NULL)  /*tree empty*/
+	{
+		printf("\n medicine not found");
+		return;
+	}
+	if(item==root->id) /*item is at root*/
+	{
+
+				printf("\nid\tquantity\tprice\tmedicine_name\tcompany");
+				printf("\tinfo\tpatient_name\tdoctor_name\tmfg_dt\t         exp_dt         contact");
+				printf("\n%d",(root->id));
+                printf("\t%d",(root->quantity));
+                printf("\t\t%.2f",(root->price));
+                printf("\t\t%s",(root->medicine_name));
+                printf("\t%s",(root->company));
+                printf("\t%s",(root->info));
+                printf("\t%s",(root->patient_name));
+                printf("\t\t%s",(root->doctor_name));
+             	printf("\t\t%d/%d/%d",(root->dd),(root->mm),(root->yy));
+                printf("\t%d/%d/%d",(root->dd1),(root->mm1),(root->yy1));
+                printf("\t%lld",(root->contact_no));
+				return;
+	}
+	if(item<root->id)
+		ptr=root->lchild;
+	else
+		ptr=root->rchild;
+
+	while(ptr!=NULL)
+	{
+		if(item==ptr->id)
+		{       printf("\nid\tquantity\tprice\tmedicine_name\tcompany");
+				printf("\tinfo\tpatient_name\tdoctor_name\tmfg_dt\t         exp_dt         contact");
+				printf("\n%d",(ptr->id));
+                printf("\t%d",(ptr->quantity));
+                printf("\t\t%.2f",(ptr->price));
+                printf("\t\t%s",(ptr->medicine_name));
+                printf("\t%s",(ptr->company));
+                printf("\t%s",(ptr->info));
+                printf("\t%s",(ptr->patient_name));
+                printf("\t\t%s",(ptr->doctor_name));
+                printf("\t\t%d/%d/%d",(ptr->dd),(ptr->mm),(ptr->yy));
+                printf("\t%d/%d/%d",(ptr->dd1),(ptr->mm1),(ptr->yy1));
+                printf("\tlld",(ptr->contact_no));
+
+			return;
+		}
+		if(item<ptr->id)
+		{
+			ptr=ptr->lchild;
+			printf("\nid\tquantity\tprice\tmedicine_name\tcompany");
+				printf("\tinfo\tpatient_name\tdoctor_name\tmfg_dt\t         exp_dt         contact");
+				printf("\n%d",(ptr->id));
+                printf("\t%d",(ptr->quantity));
+                printf("\t\t%.2f",(ptr->price));
+                printf("\t\t%s",(ptr->medicine_name));
+                printf("\t%s",(ptr->company));
+                printf("\t%s",(ptr->info));
+                printf("\t%s",(ptr->patient_name));
+                printf("\t\t%s",(ptr->doctor_name));
+				printf("\t\t%d/%d/%d",(ptr->dd),(ptr->mm),(ptr->yy));
+                printf("\t%d/%d/%d",(ptr->dd1),(ptr->mm1),(ptr->yy1));
+                printf("\tlld",(ptr->contact_no));
+		}
+		else
+		{		ptr=ptr->rchild;
+				printf("\nid\tquantity\tprice\tmedicine_name\tcompany");
+				printf("\tinfo\tpatient_name\tdoctor_name\tmfg_dt\t         exp_dt         contact");
+				printf("\n%d",(ptr->id));
+                printf("\t%d",(ptr->quantity));
+                printf("\t\t%.2f",(ptr->price));
+                printf("\t\t%s",(ptr->medicine_name));
+                printf("\t%s",(ptr->company));
+                printf("\t%s",(ptr->info));
+                printf("\t%s",(ptr->patient_name));
+                printf("\t\t%s",(ptr->doctor_name));
+                printf("\t\t%d/%d/%d",(ptr->dd),(ptr->mm),(ptr->yy));
+                printf("\t%d/%d/%d",(ptr->dd1),(ptr->mm1),(ptr->yy1));
+                printf("\tlld",(ptr->contact_no));
+
+
+		}
+
+		//printf("\n medicine not found");
+	}
+}
+void modify(struct node *ptr)
+{
+	int item,m;
+	int loop3=0,loop4=0,loop5=0,loop6=0,loop7=0,loop8=0,loop9=0,loop10=0,loop11=0,loop12=0,loop13=0,loop14=0;
+	printf("\nEnter the medicine id to be modified-");
+	scanf("%d",&item);
+
+	if(root==NULL)  /*tree empty*/
+	{
+		printf("\n tree is empty");
+		return;
+	}
+	if(item==root->id)
+	{
+
+			do
+			{
+					printf("\n 1].id :");
+					printf("\n 2].quantity :");
+					printf("\n 3].price :");
+					printf("\n 4].medicine_name :");
+					printf("\n 5].company:");
+					printf("\n 6].info :");
+					printf("\n 7].patient_name:");
+					printf("\n 8].doctor_name:");
+					printf("\n 9].mfg_date:");
+					printf("\n 10].exp_date:");
+					printf("\n 11].contact_no :");
+					printf("\n 12].Exit :");
+					printf("\n Enter Choice That u want to Modity :");
+					scanf("%d",&m);
+				switch(m)
+				{
+						case 1:
+								printf("\nenter id of medicine:");
+								scanf("%d",&(root->id));
+								break;
+
+						case 2:
+								printf("\nenter quantity:");
+								scanf("%d",&(root->quantity));
+								break;
+
+						case 3:
+								printf("\nenter price:");
+								scanf("%f",&(root->price));
+								break;
+						case 4:
+								printf("\nenter medicine name:");
+								scanf("%s",(root->medicine_name));
+								break;
+						case 5:
+								printf("\nenter company:");
+								scanf("%s",(root->company));
+								break;
+						case 6:
+								printf("\nenter info of medicine:");
+								scanf("%s",(root->info));
+								break;
+						case 7:
+								printf("\nenter patient name:");
+								scanf("%s",(root->patient_name));
+								break;
+						case 8:
+								printf("\nenter doctors name:");
+								scanf("%s",(root->doctor_name));
+								break;
+						case 9:
+
+								 while(loop7==0)
+                        {
+                        printf("\n enter the mfg date(DD MM YY ):-");
+                        scanf("%d/%d/%d",&(root->dd),&(root->mm),&(root->yy));
+                        if(root->dd<=31 && root->mm<=12 && root->yy>2010 && root->yy<=2019)
+                            {
+                             loop7=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop7=0;
+                        }
+                        }
+
+
+											break;
+						case 10:
+								  while(loop8==0)
+                        {
+                        printf("\n enter the exp date(DD/MM/YY ):-");
+                        scanf("%d/%d/%d",&(root->dd1),&(root->mm1),&(root->yy1));
+                        if(root->dd1<=31 && root->mm1<=12 && root->yy1>2015 && root->yy1<=2025)
+                            {
+                             loop8=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop8=0;
+                        }
+                        }
+								break;
+						case 11:
+                                while(loop3==0)
+                            {
+                                printf("\n enter patient's contact number:-");
+                                scanf("%lld",&(root->contact_no));
+                                    if((root->contact_no)>7000000000 && (root->contact_no)<=9999999999)
+                                      {
+                                         loop3=1;
+                                      }
+                                     else
+                                      {
+                                          printf("please enter valid contact no.");
+                                          loop3=0;
+                                      }
+                            }
+                            break;
+
+
+
+						case 12:
+								return;
+
+
+
+				}
+			}
+			while(m!=13);
+
+	}
+
+	if(item<root->id)
+		ptr=root->lchild;
+	else
+		ptr=root->rchild;
+
+	while(ptr!=NULL)
+	{
+		if(item==ptr->id)
+		{
+			do
+			{
+					printf("\n 1].id :");
+					printf("\n 2].quantity :");
+					printf("\n 3].price :");
+					printf("\n 4].medicine_name :");
+					printf("\n 5].company:");
+					printf("\n 6].info :");
+					printf("\n 7].patient_name:");
+					printf("\n 8].doctor_name:");
+					printf("\n 9].mfg_date:");
+					printf("\n 10].exp_date:");
+					printf("\n 11].contact_no :");
+					printf("\n 12].Exit :");
+					printf("\n Enter Choice That u want to Modity :");
+					scanf("%d",&m);
+				switch(m)
+				{
+						case 1:
+								printf("\nenter id of medicine:");
+								scanf("%d",&(ptr->id));
+								break;
+
+						case 2:
+								printf("\nenter quantity:");
+								scanf("%d",&(ptr->quantity));
+								break;
+
+						case 3:
+								printf("\nenter price:");
+								scanf("%f",&(ptr->price));
+								break;
+						case 4:
+								printf("\nenter medicine name:");
+								scanf("%s",(ptr->medicine_name));
+								break;
+						case 5:
+								printf("\nenter company:");
+								scanf("%s",(ptr->company));
+								break;
+						case 6:
+								printf("\nenter info of medicine:");
+								scanf("%s",(ptr->info));
+								break;
+						case 7:
+								printf("\nenter patient name:");
+								scanf("%s",(ptr->patient_name));
+								break;
+						case 8:
+								printf("\nenter doctors name:");
+								scanf("%s",(ptr->doctor_name));
+								break;
+						case 9:
+
+								 while(loop9==0)
+                        {
+                        printf("\n enter the mfg date(DD MM YY ):-");
+                        scanf("%d/%d/%d",&(root->dd),&(root->mm),&(root->yy));
+                        if(root->dd<=31 && root->mm<=12 && root->yy>2010 && root->yy<=2019)
+                            {
+                             loop9=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop9=0;
+                        }
+                        }
+								break;
+						case 10:
+
+								 while(loop10==0)
+                        {
+                        printf("\n enter the exp date(DD MM YY ):-");
+                        scanf("%d/%d/%d",&(root->dd1),&(root->mm1),&(root->yy1));
+                        if(root->dd1<=31 && root->mm1<=12 && root->yy1>2010 && root->yy1<=2019)
+                            {
+                             loop10=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop10=0;
+                        }
+                        }
+								break;
+						case 11:
+						   while(loop4==0)
+                            {
+                                printf("\n enter patient's contact number:-");
+                                scanf("%lld",&(root->contact_no));
+                                    if((root->contact_no)>7000000000 && (root->contact_no)<=9999999999)
+                                      {
+                                         loop4=1;
+                                      }
+                                     else
+                                      {
+                                          printf("please enter valid contact no.");
+                                          loop4=0;
+                                      }
+                            }
+                            break;
+
+
+						case 12:
+								return;
+
+				}
+			}
+			while(m!=13);
+
+		}
+		if(item<ptr->id)
+		{
+			/*ptr=ptr->lchild;*/
+			do
+			{
+					printf("\n 1].id :");
+					printf("\n 2].quantity :");
+					printf("\n 3].price :");
+					printf("\n 4].medicine_name :");
+					printf("\n 5].company:");
+					printf("\n 6].info :");
+					printf("\n 7].patient_name:");
+					printf("\n 8].doctor_name:");
+					printf("\n 9].mfg_date:");
+					printf("\n 10].exp_date:");
+					printf("\n 11].contact_no :");
+					printf("\n 12].Exit :");
+					printf("\n Enter Choice That u want to Modity :");
+					scanf("%d",&m);
+				switch(m)
+				{
+						case 1:
+								printf("\nenter id of medicine:");
+								scanf("%d",&(ptr->id));
+								break;
+
+						case 2:
+								printf("\nenter quantity:");
+								scanf("%d",&(ptr->quantity));
+								break;
+
+						case 3:
+								printf("\nenter price:");
+								scanf("%f",&(ptr->price));
+								break;
+						case 4:
+								printf("\nenter medicine name:");
+								scanf("%s",(ptr->medicine_name));
+								break;
+						case 5:
+								printf("\nenter company:");
+								scanf("%s",(ptr->company));
+								break;
+						case 6:
+								printf("\nenter info of medicine:");
+								scanf("%s",(ptr->info));
+								break;
+						case 7:
+								printf("\nenter patient name:");
+								scanf("%s",(ptr->patient_name));
+								break;
+						case 8:
+								printf("\nenter doctors name:");
+								scanf("%s",(ptr->doctor_name));
+								break;
+						case 9:
+
+
+								 while(loop11==0)
+                        {
+                        printf("\n enter the mfg date(DD MM YY ):-");
+                        scanf("%d/%d/%d",&(root->dd),&(root->mm),&(root->yy));
+                        if(root->dd<=31 && root->mm<=12 && root->yy>2010 && root->yy<=2019)
+                            {
+                             loop11=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop11=0;
+                        }
+                        }
+
+								break;
+						case 10:
+
+								 while(loop12==0)
+                        {
+                        printf("\n enter the exp date(DD MM YY ):-");
+                        scanf("%d/%d/%d",&(root->dd1),&(root->mm1),&(root->yy1));
+                        if(root->dd1<=31 && root->mm1<=12 && root->yy1>2010 && root->yy1<=2019)
+                            {
+                             loop12=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop12=0;
+                        }
+                        }
+								break;
+						case 11:
+								   while(loop5==0)
+                            {
+                                printf("\n enter patient's contact number:-");
+                                scanf("%lld",&(root->contact_no));
+                                    if((root->contact_no)>7000000000 && (root->contact_no)<=9999999999)
+                                      {
+                                         loop5=1;
+                                      }
+                                     else
+                                      {
+                                          printf("please enter valid contact no.");
+                                          loop5=0;
+                                      }
+                            }
+                            break;
+
+
+						case 12:
+								return;
+
+				}
+			}
+			while(m!=13);
+		}
+		else
+		{
+			//ptr=ptr->rchild;
+			do
+			{
+					printf("\n 1].id :");
+					printf("\n 2].quantity :");
+					printf("\n 3].price :");
+					printf("\n 4].medicine_name :");
+					printf("\n 5].company:");
+					printf("\n 6].info :");
+					printf("\n 7].patient_name:");
+					printf("\n 8].doctor_name:");
+					printf("\n 9].mfg_date:");
+					printf("\n 10].exp_date:");
+					printf("\n 11].contact_no :");
+					printf("\n 12].Exit :");
+					printf("\n Enter Choice That u want to Modity :");
+					scanf("%d",&m);
+				switch(m)
+				{
+						case 1:
+								printf("\nenter id of medicine:");
+								scanf("%d",&(ptr->id));
+								break;
+
+						case 2:
+								printf("\nenter quantity:");
+								scanf("%d",&(ptr->quantity));
+								break;
+
+						case 3:
+								printf("\nenter price:");
+								scanf("%f",&(ptr->price));
+								break;
+						case 4:
+								printf("\nenter medicine name:");
+								scanf("%s",(ptr->medicine_name));
+								break;
+						case 5:
+								printf("\nenter company:");
+								scanf("%s",(ptr->company));
+								break;
+						case 6:
+								printf("\nenter info of medicine:");
+								scanf("%s",(ptr->info));
+								break;
+						case 7:
+								printf("\nenter patient name:");
+								scanf("%s",(ptr->patient_name));
+								break;
+						case 8:
+								printf("\nenter doctors name:");
+								scanf("%s",(ptr->doctor_name));
+								break;
+						case 9:
+
+								 while(loop13==0)
+                        {
+                        printf("\n enter the mfg date(DD MM YY ):-");
+                        scanf("%d/%d/%d",&(root->dd),&(root->mm),&(root->yy));
+                        if(root->dd<=31 && root->mm<=12 && root->yy>2010 && root->yy<=2019)
+                            {
+                             loop13=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop13=0;
+                        }
+                        }
+								break;
+						case 10:
+
+
+								 while(loop14==0)
+                        {
+                        printf("\n enter the exp date(DD MM YY ):-");
+                        scanf("%d/%d/%d",&(root->dd1),&(root->mm1),&(root->yy1));
+                        if(root->dd1<=31 && root->mm1<=12 && root->yy1>2010 && root->yy1<=2019)
+                            {
+                             loop14=1;
+                            }
+                            else
+                        {
+                            printf("please enter valid date");
+                               loop14=0;
+                        }
+                        }
+								break;
+						case 11:
+							   while(loop6==0)
+                            {
+                                printf("\n enter patient's contact number:-");
+                                scanf("%lld",&(root->contact_no));
+                                    if((root->contact_no)>7000000000 && (root->contact_no)<=9999999999)
+                                      {
+                                         loop6=1;
+                                      }
+                                     else
+                                      {
+                                          printf("please enter valid contact no.");
+                                          loop6=0;
+                                      }
+                            }
+                            break;
+
+
+						case 12:
+								return;
+
+
+				}
+			}
+			while(m!=13);
+		}
+	}
+}
+
+
+node1 *insert_loc(node1 *front,node1 *rear)
+{
+	node1 *p,*q;
+	int i;
+	p=(node1*)malloc(sizeof(node1));
+	printf("\n******************************");
+    printf("\nenter id of medicine:");
+    scanf("%d",&p->id);
+    printf("\nenter quantity:");
+    scanf("%d",&p->quantity);
+    printf("\nenter price:");
+    scanf("%f",&p->price);
+	printf("\nenter medicine name:");
+	scanf("%s",p->medicine_name);
+    printf("\nenter company:");
+    scanf("%s",p->company);
+    printf("\nenter info of medicine:");
+    scanf("%s",p->info);
+    printf("\nenter patient name:");
+	scanf("%s",p->patient_name);
+    printf("\nenter doctors name:");
+    scanf("%s",p->doctor_name);
+    printf("\nenter mfg date:");
+	scanf("%d/%d/%d",&(p->dd),&(p->mm),&(p->yy));
+    printf("\nenter exp date:");
+	scanf("%d/%d/%d",&(p->dd1),&(p->mm1),&(p->yy1));
+    printf("\nenter patient's contact number:");
+    scanf("%lld",&p->contact_no);
+	printf("\n******************************");
+	p->next=NULL;
+	p->next=rear->next;
+	rear->next=p;
+	return(front);
+}
+
+void create_queue()
+{
+     node1 *temp,*p;
+     int i;
+     for(i=0;i<n;i++)
+    {
+		if (rear==NULL)
+		{
+				rear=(struct node1*)malloc(sizeof(node1)*100);
+				rear->next=NULL;
+				printf("\n******************************");
+				printf("\nenter id of medicine:");
+                scanf("%d",&rear->id);
+                printf("\nenter quantity:");
+                scanf("%d",&rear->quantity);
+                printf("\nenter price:");
+                scanf("%f",&rear->price);
+                printf("\nenter medicine name:");
+                scanf("%s",rear->medicine_name);
+                printf("\nenter company:");
+                scanf("%s",rear->company);
+                printf("\nenter info of medicine:");
+                scanf("%s",rear->info);
+                printf("\nenter patient name:");
+                scanf("%s",rear->patient_name);
+                printf("\nenter doctors name:");
+                scanf("%s",rear->doctor_name);
+
+				printf("\nenter mfg date:");
+				scanf("%d/%d/%d",&(rear->dd),&(rear->mm),&(rear->yy));
+				printf("\nenter exp date:");
+				scanf("%d/%d/%d",&(rear->dd1),&(rear->mm1),&(rear->yy1));
+                printf("\nenter patient's contact number:");
+                scanf("%lld",&rear->contact_no);
+				printf("\n******************************");
+				front=rear;
+		}
+		else
+		{
+				temp=(struct node1*)malloc(sizeof(node1));
+				printf("\n******************************");
+				printf("\nenter id of medicine:");
+                scanf("%d",&temp->id);
+                printf("\nenter quantity:");
+                scanf("%d",&temp->quantity);
+                printf("\nenter price:");
+                scanf("%f",&temp->price);
+                printf("\nenter medicine name:");
+                scanf("%s",temp->medicine_name);
+                printf("\nenter company:");
+                scanf("%s",temp->company);
+                printf("\nenter info of medicine:");
+                scanf("%s",temp->info);
+                printf("\nenter patient name:");
+                scanf("%s",temp->patient_name);
+                printf("\nenter doctors name:");
+                scanf("%s",temp->doctor_name);
+                printf("\nenter mfg date:");
+				scanf("%d/%d/%d",&(temp->dd),&(temp->mm),&(temp->yy));
+				printf("\nenter exp date:");
+				scanf("%d/%d/%d",&(temp->dd1),&(temp->mm1),&(temp->yy1));
+                printf("\nenter patient's contact number:");
+                scanf("%lld",&temp->contact_no);
+				printf("\n******************************");
+				rear->next=temp;
+				temp->next=NULL;
+				rear=temp;
+		}
+	}
+}
+
+void display_queue(node1 *front)
+{
+    node1 *p;
+    int sum=0;
+    int j=0;
+
+    if(front==NULL)
+    {
+        printf("\n*Queue Empty*\n");
+    }
+    else
+    {
+        p=front;
+		printf("\nid\tquantity\tprice\tmedicine_name\tcompany");
+        printf("\tinfo\tpatient_name\tdoctor_name\tmfg_dt\t         exp_dt         contact");
+		printf("\n\n");
+		while(p!=NULL)
+		{
+			printf("\n%d",p->id);
+            printf("\t%d",p->quantity);
+            printf("\t\t%.2f",p->price);
+            printf("\t\t%s",p->medicine_name);
+            printf("\t%s",p->company);
+            printf("\t%s",p->info);
+            printf("\t%s",p->patient_name);
+            printf("\t\t%s",p->doctor_name);
+            printf("\t\t%d/%d/%d",(p->dd),(p->mm),(p->yy));
+			printf("\t\t%d/%d/%d",(p->dd1),(p->mm1),(p->yy1));
+            printf("\tlld",p->contact_no);
+            p=p->next;
+
+		}
+   }
+}
+
+void del_queue()
+{
+    node1 *temp;
+    if(front==NULL)
+    {
+        printf("\n*Queue Empty*\n");
+    }
+    else
+    {
+		temp = front;
+		front=front->next;
+		free(temp);
+    }
+
+}
+
+
+
+
+