Queue Operation in c program using array with output

QUEUE OPERATION USING ARRAY

#include<stdio.h>

#include<conio.h>

#define SIZE 5

int i,rear,front,item,s[SIZE];

void insert(int item,int s[]);

void del(int s[]);

void display(int s[]);

void main()

{

int ch;

clrscr();

front=0;

rear=-1;

do

{

printf("\n\n 1.INSERTION \n 2.DELETION \n 3.EXIT \n");
printf("\nENTER YOUR CHOICE : ");
scanf("%d",&ch);
switch(ch)
{
case 1:
printf("\n\t INSERTION \n");
if(rear>=SIZE-1)
{
printf("\t\n QUEUE IS FULL\n");
}
else
{
printf("\n ENTER AN ELEMENT : ");
scanf("%d",&item);
insert(item,s);
}
display(s);
break;
case 2:
printf("\n\t DELETION \n");
if(front>rear)
{
printf("\t\nQUEUE IS EMPTY\n");
}
else
{
del(s);
}
display(s);
break;}

}

while(ch!=3);

getch();

}

void insert(int item,int s[])

{

if(rear<SIZE)

{

rear=rear+1;

s[rear]=item;

}

}

void del(int s[])

{

int i;

item=s[front];

for(i=0;i<=rear;i++)

 s[i]=s[i+1];

 rear--;

printf("\n DELETED ELEMENT IS %d\n\n",item);

}

void display(int s[])

{

printf("\n");

for(i=front;i<=rear;i++)

{

printf(" \t %d",s[i]);

}

}

Output:

 1.INSERTION

 2.DELETION

 3.EXIT
 

ENTER YOUR CHOICE : 1

                        INSERTION

 ENTER AN ELEMENT : 2

       
                                           2

 1.INSERTION

 2.DELETION

 3.EXIT

ENTER YOUR CHOICE : 1

                         INSERTION

ENTER AN ELEMENT : 3

                                 2       3

 1.INSERTION

 2.DELETION

 3.EXIT

ENTER YOUR CHOICE : 1

                         INSERTION

 ENTER AN ELEMENT : 5

                         2       3       5

 1.INSERTION

 2.DELETION

 3.EXIT

ENTER YOUR CHOICE : 2

                          
                          DELETION
 

 DELETED ELEMENT IS 2

                                   
                                   3       5

 1.INSERTION

 2.DELETION

 3.EXIT

ENTER YOUR CHOICE : 2

                                  
                          DELETION
 

 DELETED ELEMENT IS 3
 

                                           5

 1.INSERTION

 2.DELETION

 3.EXIT
 

ENTER YOUR CHOICE : 3