a C++ program explains the concept of queue and deletes the itemsfrom queue i am

Question

a C++ program explains the concept of queue and deletes the itemsfrom queue i am having the code just need some correction out ofthat please help me the code is as follows


void main()
{
clrscr();
int Q[9],front=0,rear=0,item,lb=1,ub=9,choice=0;
cout<<"Delete Item From Queue: ";
    cin>>item;




      if(front==0 && rear==0)
      {
      cout<<"Underflow Error";
      exit(0);
      }
    if(front==rear)
      {
      rear=0;
      front=0;
      }
    else
    {
    if(front==ub)
    {
       front=lb;
    }
    else
    {
    front=front+1;
    }
    }
    for(int i=0;i<=front+1;i++)
    {
    cout<<"Value at poistion"<<i+1;
    cout<<" of queue is"<<Q[i+1]<<endl;
}

Explanation / Answer

Dear,                                                                    
                                                                    
//C++ Program to implement theQueue #include <iostream.h>
#include <conio.h>

int rear,front=0,q[5],ele;
void menu()
{
cout<<"QUEUEOPERATIONS"<<endl<<"-----------------"<<endl<<"1.Insert"<<endl<<"2.Delete"<<endl<<"3.Display"<<endl<<"4.Exit"<<endl;

}
void insert()
{
if(rear==5)
cout<<"Queue is full"<<endl;
else
{
cout<<"Insert an element"<<endl;
cin>>ele;
q[rear]=ele;
rear++;
}
cout<<endl;
}
void delet()
{

if(front==rear)
cout<<"Queue is empty"<<endl;
else
{
cout<<"Deleted element is:"<<q[front]<<endl;
front++;
}
cout<<endl;
}
void display()
{
if(front==rear)
cout<<"Queue is empty"<<endl;
else
{
cout<<"The elements in the queue are:"<<endl;
for(int i=front;i<rear;i++)
cout<<q[i]<<" ";
}
cout<<endl;
}

void main()
{
int ch;
clrscr();
do
{
menu();
cout<<"Enter your choice"<<endl;
cin>>ch;
switch(ch)
{
case 1:insert();break;
case 2:delet();break;
case 3:display();break;
case 4:break;
}
}while(ch!=4);
} I hope  this is helpful foru...........

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