Program to perform an operation on Queue

#include<stdio.h>

#include<conio.h>

void main()

{

int a[5],i,F=0,R=0,n,m,item;

clrscr();

do

{

printf(“Enter your choice 1-Insertion\n 2-Deletion\n 3-Display\n”);

scanf(“%d”,&n);

switch(n)

{

case 1:

{

if(R==0)

{

printf(“Overflow”);

exit (0);

}

else if(F==0 && R==0)

{

F=1;

R=1;

printf(“Enter the element to Insert\n”);

scanf(“%d”,&item);

a[R]=item;

}

else

{

printf(“Enter the element to insert\n”);

scanf(“%d”,&item);

R=R+1;

a[R]=item;

}

break;

}

case 2:

{

if(R==0)

{

printf(“Underflow”);

}

else

{

item=a[F];

F=F+1;

printf(“The deleted element is \n %d\n”,item);

}

break;

}

case 3:

{

for(i=R;i>=F;i--)

{

printf(“%d\n”,a[i]);

}

break;

}

default:

{

printf(“Invalid Input”);

break;

}

}

printf(“Press 5 to continue:\n”);

scanf(“%d”,&n);

}

while(m==5)

getch();

}