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#include<iostream>
#include<stdlib.h>
#include<conio.h>
using namespace std;
const int s=50;
int f=-1, r=-1, q[s];
int insertAQ(int q[], int ele)
{
if(r==s-1) return -1;
else if(r==-1)
{
f=r=0; q[r]=ele;
}
else
{
r++; q[r]=ele;
}
return 0;
}
int removeAQ(int q[])
{
int ret;
if(f==-1) return -1;
else
{
ret=q[f];
if(f==r) f=r=-1;
else
{
f++;
}
}
return ret;
}
void display(int q[], int p, int o)
{
if(p==-1) return;
for(int i=p; i<o; i++)
cout<<q[i]<<"<-";
cout<<q[o]<<endl;
}
int main()
{
int item, res, rep; char ch, hell='y';
fronti=reari=NULL;
int inf;
while(hell=='y'||hell=='Y')
{
cout<<"==========\n";
cout<<" MENU\n";
cout<<"==========\n";
cout<<"1.Array queue push.\n2.Array queue pop.\n";
ch=getch(); cout<<endl;
switch(ch)
{
case '1':
cout<<"\n\nEnter item to be pushed: "; cin>>item;
res=insertAQ(q, item);
if(res==-1)
{
cout<<"\n\nOVERFLOW !!\n\n"; exit(1);
}
cout<<"\n\nQUEUE: \n";
display(q, f, r);
break;
case '2':
rep=removeAQ[q];
if(res==-1)
{
cout<<"\n\nUNDERFLOW !!\n\n"; exit(1);
}
else
{
cout<<"\n\nElement deleted is "<<res<<".\n";
cout<<"\nQUEUE: \n";
display(q, f, r);
}
break;
}
}
}
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