c program to add and delete an element from circular queue
using array
Answer Posted / pooja patial
#include<stdio.H>
#include<conio.h>
#define MAXQ 10
struct cq
{
int data[MAX];
int front,rear;
};
void add(struct cq*,int);
int del(struct cq*);
void main()
{
int ch,item;
struct cq q1;
q1.front=q1.rear=-1;
printf("\t\tMAIN MENU\n");
printf("\t\t************\n");
printf("\t\t 1.Add in a circular queue\n");
printf("\t\t 2.delete from circular queue\n");
printf("\t\t 3.Exit\n");
printf("\t\t Enter your choice\n");
scanf("%d",&ch);
clrscr();
switch(ch)
{
case 1:
printf("Enter the value which is to be add:-");
scanf("%d",&item);
add(&q1,item);
break;
case 2:
item=del(&q1);
if(item!=NULL)
printf("Delete value ->%d",item);
break;
case 3:
break;
default:
printf("Wromg choice !Try again") ;
}
getch();
}
while(ch!=3);
}
void add(struct cq*p,int item)
{
if(p->rear==MAX-1 && p->front==0 || p->rear+1==p->front)
{
printf("Queue is full\n");
return;
}
if(p-.front==-1)
p->front=p->raer=0;
else if(p->rear=MAX-1)
p->rear=0;
else
p->rear++;
p->data[p->rear]=item;
}
int del(struct cq*p)
{
int item;
if(p->front==-1)
{
printf("Queue is Empty");
return(NULL);
}
item=p->data[p->front];
if(p->front==p->rear)
p->front=p->rear=-1;
else if(p->front==MAX-1)
p->front=0;
else
p->front++;
return(item);
}
Is This Answer Correct ? | 12 Yes | 16 No |
Post New Answer View All Answers
What is c variable?
how many errors in c explain deply
What are the data types present in c?
Are there constructors in c?
In the DOS enveronment, normal RAM that resides beyond the 1mb mark. a) expanded memory b) swapped memory c) Extended memory d) none
What is #pragma statements?
write a C program: To recognize date of any format even formats like "feb-02-2003","02-february-2003",mm/dd/yy, dd/mm/yy and display it as mm/dd/yy.
How can a process change an environment variable in its caller?
What are the three constants used in c?
What is the difference between void main and main in c?
Compare interpreters and compilers.
What is the scope of an external variable in c?
Write a code of a general series where the next element is the sum of last k terms.
How to write a multi-statement macro?
i want to switch my career from quailty assurance engineering to development kindly guide me from which programming language its better for me to start plz refer some courses or certifications too i have an experience of 1.5 yrs in QA field.Kindly guide me