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July 7, 2018 16:31
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Circular Queue implementation with Linked List
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//Milad Abbasi | |
//06-07-2018 | |
//Circular Queue implementation with Linked List | |
#include<iostream> | |
#define SIZE 100 | |
using namespace std; | |
class node | |
{ | |
public: | |
node() | |
{ | |
next = NULL; | |
} | |
int data; | |
node *next; | |
}*front=NULL,*rear=NULL,*n,*temp,*temp1; | |
class cqueue | |
{ | |
public: | |
void insertion(); | |
void deletion(); | |
void display(); | |
}; | |
void cqueue::insertion() | |
{ | |
n=new node[sizeof(node)]; | |
cout<<"\nEnter the Element: "; | |
cin>>n->data; | |
if(front==NULL) | |
{ | |
front=n; | |
} | |
else | |
{ | |
rear->next=n; | |
} | |
rear=n; | |
rear->next=front; | |
} | |
void cqueue::deletion() | |
{ | |
int x; | |
temp=front; | |
if(front==NULL) | |
{ | |
cout<<"\nCircular Queue Empty!!!"; | |
} | |
else | |
{ | |
if(front==rear) | |
{ | |
x=front->data; | |
delete(temp); | |
front=NULL; | |
rear=NULL; | |
} | |
else | |
{ | |
x=temp->data; | |
front=front->next; | |
rear->next=front; | |
delete(temp); | |
} | |
cout<<"\nElement "<<x<<" is Deleted"; | |
display(); | |
} | |
} | |
void cqueue::display() | |
{ | |
temp=front; | |
temp1=NULL; | |
if(front==NULL) | |
{ | |
cout<<"\n\nCircular Queue Empty!!!"; | |
} | |
else | |
{ | |
cout<<"\n\nCircular Queue Elements are:\n\n"; | |
while(temp!=temp1) | |
{ | |
cout<<temp->data<<" "; | |
temp=temp->next; | |
temp1=front; | |
} | |
} | |
} |
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