Thread: can anybody help me in queue program asap plz

Code:

#include<stdio.h>
#include<process.h>
struct que
{
int no;
struct que *next;
}
*front=NULL,*rear=NULL;
typedef struct que que;
void en()
{
que*p;
printf("enter the no.");
scanf("%d",&p->no);
if(front==rear)
{
 front=p;
 rear=p;
}
else
{
p->next=NULL;
rear->next=p;
rear=p;
}
}
int de()
{
que*p;
p=front;
if(front==rear)
{
front=NULL;
rear=NULL;
}
else
{
front=front->next;
 printf("deleted no. is%d",p->no);
}
}
int main()
{
int ch;
printf("\nenter ur choice \n 1. queue \n 2.deque \n 3.traverse ");
scanf("%d",&ch);
switch(ch)
{
case 1:
{
void en();
break;
}
case 2:
{
int de();
break;}
}
}

why this program closes after i press 1

I'll get you started with these definitions for queue and node. See if you can figure out the rest:

Code:

typedef struct _QUEUE{
struct _QUEUE *front;
struct _QUEUE *rear;
}QUEUE, *PQUEUE;

typedef struct _NODE{
struct _NODE *next;
int number;
}NODE, *PNODE;

QUEUE queue_of_nodes;
NODE example_node;