Code for simply QUEUE


#include<stdio.h>
#include<conio.h>

void qinsert(int q[],int  n,int *f,int *r,int x)
{
 if(*r>=(n-1))
 {
printf("queue is overflow");
  return;
 }
 *r=*r+1;
 q[*r]=x;
 if(*f==-1)
 *f=0;
}

int qdelete(int q[],int *f,int *r)
{
int a;
 if(*f==-1)
  return 0;
 else
 {
  if(*f==*r)
  {
   *f=-1;
   *r=-1;
  }
  else
  {
   a=q[*f];
   *f=*f+1;
  }
   return(a);
 }
}

void display(int q[],int *f,int *r)
{
int i;
 if(*f==-1)
printf("queue is empty");
  else
  {
printf("\nthe queue contains:\n");
   for(i=*f;i<=*r;i++)
   {
printf("%d ",q[i]);
   }
getch();
  }
}

void main()
{
int n=5,*f,*r,i,j,k;
intq[5];
 *f=-1;
 *r=-1;
clrscr();
 again:
printf("\n1.insert\n2.delete\n3.display\n4.exit");
printf("enter your choice\n");
scanf("%d",&k);
 switch(k)
 {
  case 1:
printf("enter the value to be inserted\n");
scanf("%d",&j);
qinsert(q,n,f,r,j);
  display(q,f,r);
goto again;
  case 2:
  j=qdelete(q,f,r);
  if(j==0)
printf("queue is underflow");
  else
  {
   display(q,f,r);
  }
goto again;
case 3:
  display(q,f,r);
goto again;
case 4:
 goto exit;
 }
exit:
}

Comments

Post a Comment

Popular posts from this blog

Code for BUBBLE Sort

Image
1                                                      Bubble sort Ø        #include<stdio.h> #include<conio.h> void BubbleSort(int[] , int); void main() {    int array[10], n, i;    clrscr();    printf("\n\n------------------------ BUBBLE SORT -----------------------");    printf("\n\n ENTER NUMBER OF ELEMENTS : ");    scanf("%d", &n);    printf("\n");    for (i = 0 ; i < n ; i++ )    { printf("ENTER ELEMENT %d: ",i+1);      scanf("%d", &array[i]);    }    BubbleSort(array,n);    getch(); } void BubbleSort(int array[], int n) {    int i,c,j,temp;    for ( i = 0 ; i < ( n-1 ) ; i++ )    {       for ( j = 0 ; j < n-i-1 ; j++ )       {        if ( array[j] > array[j+1])        {                 temp = array[j];                 array[j] = array[j+1];                 array[j+1] = temp;        }       }       pr
Read more

Code for Circular Linked List c-programing

#include<stdio.h> #include<conio.h> #include<stdlib.h> struct node {  int data;  struct node *next; }; struct node *head; void InsertAtBeginning(int x) {  struct node *temp = (struct node *)malloc(sizeof(struct node));  struct node *temp2 = head;  temp->data = x;  temp->next = NULL;  if(temp==NULL)  {   printf("\n MEMORY UNAVAILABLE");  }  if(head==NULL)  {   head = temp;   temp->next = head;  }  if(temp2->next!=head)  {   temp2 = temp2->next;  }  temp->next = head;  head = temp;  temp2->next = head; } void InsertAtEnd(int y) {  struct node *temp = (struct node *)malloc(sizeof(struct node));  struct node *temp2;  temp->data = y;  temp->next = NULL;  if(temp==NULL)  {   printf("\n MEMORY UNAVAILABLE");  }  if(head==NULL)  {   head = temp;   temp->next = head;  }  while(temp2->next!=head)  {   temp2 = temp2->next;  }  temp2->next = temp;  temp->n
Read more

Code for SELECTION Sort in C-Programming

Image
1                               Selection Sort Ø       #include<stdio.h> #include<conio.h> void SelectionSort(int[] , int); void main() {    int array[10], n, i;    clrscr();    printf("\n\n--------------------- SELECTION SORT --------------------");    printf("\n\n ENTER NUMBER OF ELEMENTS : ");    scanf("%d", &n);    printf("\n");    for (i = 0 ; i < n ; i++ )    { printf("ENTER ELEMENT %d : ",i+1);     scanf("%d", &array[i]);      }    SelectionSort(array,n);    getch(); } void SelectionSort(int array[], int n) {    int i,c,       j,temp;    for ( i = 0 ; i < ( n-1 ) ; i++ )    {       for ( j = i + 1 ; j < n ; j++ )       {            if ( array[i] > array[j])              {                 temp = array[i];                 array[i] = array[j];                 array[j] = temp;               }       }
Read more