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Queue.cpp
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#include<iostream>
using namespace std;
struct node
{
int value;
node *next;
};
class queue
{
private:
node *head;
node *temp;
node *front;
node *rear;
public:
queue()
{
front=NULL;
rear=front;
}
void inqueue()
{
if(rear==NULL)
{
rear=new node;
cin>>rear->value;
rear->next=NULL;
front=rear;
return;
}
else
{
rear->next=new node;
cin>>rear->next->value;
rear=rear->next;
rear->next=NULL;
return;
}
}
void dequeue()
{
if(front==NULL)
{
rear=NULL;
return;
}
else
{
temp=front;
front=front->next;
delete temp;
}
}
void print()
{
temp=front;cout<<endl;
while(temp!=NULL)
{
cout<<temp->value;
temp=temp->next;
}
}
};
int main()
{
queue q1;
q1.inqueue();
q1.inqueue();
q1.inqueue();
q1.print();
q1.dequeue();
q1.dequeue();
q1.print();
}