Completely Solved C, C++ Programs Assignment.

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### C program to implement Circular Queue

 Filed Under: Data Structure,Queue

Program C program to implement Circular Queue
#include <stdio.h>
#define MAX 10 /* The maximum size of the queue */
#include <stdlib.h>

void insert(int queue[], int *rear, int front, int value)
{
*rear= (*rear +1) % MAX;
if(*rear == front)
{
printf("The queue is full can not insert a valuen");
exit(0);
}
queue[*rear] = value;
}

void delete(int queue[], int *front, int rear, int * value)
{
if(*front == rear)
{
printf("The queue is empty can not delete a valuen");
exit(0);
}
*front = (*front + 1) % MAX;
*value = queue[*front];
}

void main()
{
int queue[MAX];
int front,rear;
int n,value;
front=0; rear=0;
do
{
do
{
printf("Enter the element to be insertedn");
scanf("%d",&value);
insert(queue,&rear,front,value);
printf("Enter 1 to continuen");
scanf("%d",&n);
} while(n == 1);

printf("Enter 1 to delete an elementn");
scanf("%d",&n);
while( n == 1)
{
delete(queue,&front,rear,&value);
printf("The value deleted is %dn",value);
printf("Enter 1 to delete an elementn");
scanf("%d",&n);
}
printf("Enter 1 to continuen");
scanf("%d",&n);
} while(n == 1);
}
Output
Enter the element to be inserted
10
Enter 1 to continue
1
Enter the element to be inserted
20
Enter 1 to continue
1
Enter the element to be inserted
30
Enter 1 to continue
1
Enter the element to be inserted
40
Enter 1 to continue
1
Enter the element to be inserted
50
Enter 1 to continue
1
Enter the element to be inserted
60
Enter 1 to continue
1
Enter the element to be inserted
70
Enter 1 to continue
1
Enter the element to be inserted
80
Enter 1 to continue
1
Enter the element to be inserted
90
Enter 1 to continue
0
Enter 1 to delete an element
1
The value deleted is 10
Enter 1 to delete an element
1
The value deleted is 20
Enter 1 to delete an element
0
Enter 1 to continue
1
Enter the element to be inserted
100
Enter 1 to continue
1
Enter the element to be inserted
110
Enter 1 to continue
0
Enter 1 to delete an element
1
The value deleted is 30
Enter 1 to delete an element
1
The value deleted is 40
Enter 1 to delete an element
0
Enter 1 to continue
1
Enter the element to be inserted
120
Enter 1 to continue
1
Enter the element to be inserted
130
Enter 1 to continue
0
Enter 1 to delete an element
0
Enter 1 to continue
0

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