9stlqueuec1_1476775079750

// Write C++ program using STL for implementation of queue using SLL

#include<iostream>
#include<string.h>
#include<list>
using namespace std;

class Queue
{
    public :
        int a;
        list <int> s;
        list <int> :: iterator itr;


        void push()
        {
            cout<<"\n Enter a number : ";
                cin>>a;
                s.push_back(a);
        }

        void displaystack()
        {
            cout<<"\n The elements in the queue are : "<<"\n";
            for(itr=s.begin() ; itr!=s.end() ; itr++)
            {
                cout<<*itr<<"\t";
            }
        }

        void pop()
        {
            itr=s.begin();
            s.pop_front();
            cout<<"\n The element popped out of the queue is "<<*itr;
        }

};

int main()
{
    Queue p;
    int choice;
    char ans;
    do
    {
        cout<<"\n 1. Add element \n 2. Delete element \n 3. Display queue elements";
        cout<<"\n Enter the operation you want to perform : ";
        cin>>choice;
        switch(choice)
        {
            case 1 : p.push();
            break;
            case 2 : p.pop();
            break;
            case 3 : p.displaystack();
            break;
        }
        cout<<"\n Do you want to perform any other operation ?";
        cin>>ans;
    }while(ans=='Y' || ans=='y');
}

/*Output:
[student@localhost ~]$ g++ C1.cpp
[student@localhost ~]$ ./a.out

 1. Add element
 2. Delete element
 3. Display queue elements
 Enter the operation you want to perform : 1

 Enter a number : 6

 Do you want to perform any other operation ? y

 1. Add element
 2. Delete element
 3. Display queue elements
 Enter the operation you want to perform : 1

 Enter a number : 8

 Do you want to perform any other operation ? y

 1. Add element
 2. Delete element
 3. Display queue elements
 Enter the operation you want to perform : 3

 The elements in the queue are :
6    8   
 Do you want to perform any other operation ? y

 1. Add element
 2. Delete element
 3. Display queue elements
 Enter the operation you want to perform : 2

 The element popped out of the queue is 6
 Do you want to perform any other operation ?n
[student@localhost ~]$ */