QUEUE IMPLEMENTATION USING ARRAY
BCA third semester
DATA STRUCTURE
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#define max 5
int front=0,rear=-1;
int queue[max];
void main()
{
int ch,i;
while(1)
{
clrscr();
printf("1. Insertion\n2. Deletion\n3. Display\n4. Exit\n\nEnter your Choice : ");
scanf("%d",&ch);
switch(ch)
{
case 1:
clrscr();
if(rear == max-1)
printf("Queue Overflow !!!!");
else
{
rear++;
printf("Enter Element : ");
scanf("%d",&queue[rear]);
}
getch();
break;
case 2:
clrscr();
if(front>rear)
printf("Queue Underflow !!!!");
else
{
printf("%d is deletion element",queue[front]);
front++;
}
getch();
break;
case 3:
clrscr();
if(front>rear)
printf("Queue Underflow !!!!");
else
for(i=front;i<=rear;i++)
{
printf("\n %d",queue[i]);
}
getch();
break;
case 4:
exit(0);
break;
}
}
}
OUTPUT
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 1
ENTER Element : 50
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 1
ENTER Element : 100
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 1
ENTER Element : 150
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 1
ENTER Element : 200
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 1
ENTER Element : 250
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 1
QUEUE OVERFLOW!!!!!!!!!!!!!!!
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 3
Queue Elements :
50
100
150
200
250
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 2
50 is deletion element
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 2
100 is deletion element
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 2
150 is deletion element
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 2
200 is deletion element
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 2
250 is deletion element
1. INSERT
2. DELETE
3. DISPLAY
4. EXIT
Enter Your Choice : 2
QUEUE UNDERFLOW
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