Railway Reservation System

railway_reservation (1).c

@@ -0,0 +1,343 @@
+#include<stdio.h> 
+#include<stdlib.h>
+#define size 100
+
+typedef struct NODE
+{
+	int reg_no	; 
+	int age	;
+	char name[20]	; 
+	char bp[20]	;
+	char destination[20];
+	struct NODE *next	;
+} node;
+
+node *start;
+node *front;
+node *rear;
+node* deq();
+int create();
+int reserve(node*); 
+int  cancel(int); 
+void enq(node*);
+void display();
+int count=0; 
+int num=0;
+
+int create( )
+{
+	node *newnode ;
+	newnode=(node *)calloc(1,sizeof(node));
+	newnode->reg_no=1;
+	printf("Name: ");
+	scanf("%s", newnode->name); 
+	printf("Rajdhani Express's stop are :\n 1. chennai\n 2.Nagpur\n 3.Jhansi Junction\n");
+	printf("Boarding loacation: ");
+	scanf("%s",newnode->bp);
+	printf("Enter your destination: ");
+	scanf("%s",newnode->destination);
+	printf("Age : ");
+	scanf("%d", &newnode->age); 
+	if(newnode->age>=65 || newnode->age<=10)
+	{
+		free(newnode); 
+		return -1;
+	}
+	start=newnode; 
+	newnode->next=NULL; 
+	num++;
+	return 1;
+}
+
+
+int reserve(node *start)
+{
+	int choice =0;    
+	int c=0;
+	printf("\n\n Available Train Name-\n 1.Rajdhani Express \n 2.Koyna Express \n 3.Aazad Hind Express \n 4.Deccan Express \n 5.exit\n\n");
+	printf("enter your choice for available trains\n");
+	scanf("%d",&c); 
+	switch(c)
+	{
+		case 1:	printf("Chennai to Delhi\n");
+				break;	
+
+		case 2:	printf("Pune to Satara\n"); 
+				break;
+
+		case 3:	printf("Pune to Akola\n");
+				break;
+
+		case 4:	printf("Mumbai to Pune\n");
+				break;
+
+		case 0:	printf("thank you !!!");
+				break;
+	}
+
+	printf("\n\n Train Class-\n 1.First AC(1A) Sleeper \n 2.AC(2A)Tier Sleeper \n 3.AC(3A) Sleeper/Chair car \n 4.Sleeper \n 5.General \n 6.Ladies \n 7.Exit \n\n");
+	printf("enter your choice for train class\n");
+	scanf("%d",&c); 
+	switch(c)
+	{
+		case 1:	printf("First AC(1A) Sleeper\n");
+				break;
+
+		case 2:	printf("AC(2A)Tier Sleeper\n"); 
+				break;
+
+		case 3:	printf("Chair car\n");
+				break;
+
+		case 4:	printf("Sleeper\n"); 
+				break;
+
+		case 5:	printf("General\n"); 
+				break;
+
+		case 6:	printf("Ladies\n");
+				break;
+
+		case 0: printf("Thank You\n");//exit(0);
+				break;
+
+	}
+	printf("\n\n Berth Preference-\n 1.No Preference \n 2.Upper Berth \n 3.Lower Berth \n 4.Middle \n 0.Exit\n\n"); 
+	printf("enter your choice for berth perference\n");
+	scanf("%d",&c);
+
+	switch(c)
+	{
+		case 1:	printf("any available berth is okay !\n");
+				break;
+
+		case 2:	printf("Upper Berth\n");
+				break;
+
+		case 3:	printf("Lower Berth\n");
+				break;
+
+		case 4:	printf("Middle\n");
+				break;
+
+		case 0:	printf("Thank You \n");
+				break;//exit(0);
+	}
+	int temp; 
+	if(start==NULL)
+	{
+		temp = create(); 
+		return temp;
+
+	}
+	else
+	{
+		node *temp, *new_node; 
+		temp=start;
+
+		while(temp->next!=NULL)
+		{
+			temp=temp->next;
+		}	
+
+		new_node=(node *)calloc(1,sizeof(node));
+		printf("Name: ");
+		scanf(" %s", new_node->name); 
+		printf("Rajdhani Express's stop are :\n 1. chennai\n 2.Nagpur\n 3.Jhansi Junction\n");
+		printf("Boarding Location ");
+		scanf(" %s",new_node->bp);
+		printf("Age : ");
+		scanf("%d", &new_node->age); 
+		if(new_node->age >=65 || new_node->age<=10) 
+		{
+			return -1;
+		}
+		new_node->next=NULL;
+		if(num<=size)
+		{
+			num++;
+			new_node->reg_no=num;
+			temp->next=new_node;
+			return 1;
+		}
+		else
+		{
+			enq(new_node);
+			return 0;
+		}
+	}
+}
+
+int cancel(int reg)
+{	
+	node *ptr, *preptr, *newnode;
+	ptr=start;
+	preptr=NULL;
+	if(start==NULL)
+	{
+		return -1;	
+	}
+	if(ptr->next==NULL && ptr->reg_no==reg)
+	{
+		start=NULL;
+		num--; 
+		free(ptr); 
+		return 1;
+	}
+	else
+	{
+		while(ptr->reg_no!=reg && ptr->next!=NULL)
+		{
+			preptr=ptr; 
+			ptr=ptr->next;
+		}
+		if(ptr==NULL && ptr->reg_no!=reg)
+		{
+			return -1;
+		}
+		else
+		{
+			preptr->next=ptr->next; 
+			free(ptr);
+
+		}
+		newnode=deq();
+		while(preptr->next!=NULL)
+		{
+			preptr=preptr->next;
+			preptr->next=newnode;
+			num--;
+		}
+		return 1;
+	}
+}
+
+void enq(node *new_node)
+{
+	if(rear==NULL)
+	{
+		rear=new_node;
+		rear->next=NULL; 
+		front=rear;
+	}
+	else
+	{
+		node *temp; 
+		temp=new_node; 
+		rear->next=temp; 
+		temp->next=NULL;
+ 		rear=temp;
+
+	}
+	count++;
+}
+
+
+node* deq()
+{
+	node *front1; 
+	front1=front; 
+	if(front==NULL)
+	{
+		return NULL;
+	}
+	else
+	{
+		count-- ;
+		if(front->next!=NULL)
+		{
+			front=front->next; 
+			front1->next=NULL;
+			return front1;
+		}
+		else
+		{
+			front=NULL;
+			rear=NULL;
+			return front1;
+		}
+	}
+}
+
+
+
+void display()
+{
+	node *temp;
+	temp=start;
+	while(temp!=NULL)
+	{
+		printf("\nRegistration Number: %d\n", temp->reg_no); 
+		printf("Name : %s\n", temp->name);
+		printf("Age : %d\n", temp->age);
+		printf("boarding point : %s\n",temp->bp);
+		printf("destination: %s\n",temp->destination);
+		temp=temp->next;
+	}
+}
+
+
+int main()
+{
+	int choice, status=0,canc=0, reg=0; 
+	start=NULL;
+	rear=NULL; 
+	front=NULL;
+	printf("\t\t************RAILWAY RESERVATION************\t\t\t\n"); 
+	int ch =0;
+	do
+	{
+ 		printf("\n\nWe have this option for you- \n 1. Book a ticket \n 2. Cancel Booking \n 3. Display passenger details \n 4. exit\n\n");
+		printf("which option from above list , you have chosen ?\t");
+		scanf("%d", &choice);
+		switch(choice)
+		{
+			case 1 :	status=reserve(start);
+						if(status==0)
+						{
+							printf("\nBooking Full!! \nYou are added to waiting list. Waiting list number %d",count);
+						}
+						else if(status == -1) 
+						{
+							printf("\n age not eligible");
+						}
+						else
+						{
+							printf(" \nBooking Successful!!! Enjoy your journey! Your Reg No is %d\n\n", num);
+						}
+
+						break;
+
+			case 2:		printf(" \n Give the Registration number to be cancelled\n"); 
+						scanf(" %d", &reg);
+						if(reg > num) 
+						{
+							printf("Invalid!!"); 
+						}
+						else
+						{
+							canc=cancel(reg); 
+							if(canc==-1)
+							{
+								printf("\nRegistration number invalid!!\n"); 
+							}
+							else
+							{
+								printf("\nRegistration cancelled successfully\n");							
+							}
+						} 
+						break;
+
+			case 3: 	display();
+						break;
+
+			case 0: 	printf("Thank You!!!"); 
+						break;
+
+			default:	printf("\nWrong choice!\n");
+
+		}
+	}while(choice !=0);
+}
+
+