#include<stdio.h>
#include<conio.h>
void insert();
void del();
void trav();
int f=-1,r=-1,a[20],n=5;
int main()
{
    int ch;
    char ch1='y';
    clrscr();
    while(ch1=='y')
    {
    printf("\nMEnu ");
    printf("\n1.Insertion ");
    printf("\n2.Deletion ");
    printf("\n3.Traversal ");
    printf("\n4.Exit ");
    printf("\nEnter your chioce ");
    scanf("%d",&ch);
    switch(ch)
    {
    case 1:
	 insert();
	 break;
	case 2:
	      del();
	      break;
	      case 3:
		   trav();
		   break;
		   case 4:
			exit(0);
    }
    printf("\nDo you want to repeat ");
    ch1=getche();
}
}
void insert()
{
     int item;
     if(r<n-1)
     {
     printf("\nEnter the element ");
     scanf("%d",&item);
     if(f==-1)
     {
	    f=0;
	    r=0;
     }
     else

	 r=r+1;
	 a[r]=item;
     }
}
void del()
{
if((f>=0)&&(f<=r))
{
f=f+1;
printf("\nItem is deleted ");
}
else
{
printf("\nUnderflow ");
}
}
void trav()
{
int i;
if((f==-1)||(f>r))
{
printf("\nQueue is empty ");
}
for(i=f;i<=r;i++)
{
printf("%d\n",a[i]);
}
}