//Program To Perform Operations On A Sorted Linklist
#include<stdio.h>#include<conio.h>
#include<stdlib.h> //for malloc function
struct node
{
int data;
struct node *next;
}*head;
void insert(int data) //for insertion
{ struct node *temp=(struct node *)malloc(sizeof(struct node));
struct node *save=(struct node *)malloc(sizeof(struct node));
struct node *ptr=(struct node *)malloc(sizeof(struct node));
temp->data=data;
if(head==NULL) //if it is first element
{
head=temp;
temp->next=NULL;
}
if(temp->data<head->data)//if value less than first element
{
temp->next=head;
head=temp;
}
else{
ptr=head;
while(ptr!=NULL)
{
if(temp->data<ptr->data)
{
break;
}
else
{ save=ptr;
ptr=ptr->next;
}
}
save->next=temp;
temp->next=ptr;
}
}
void print() //for display
{
struct node *temp=head;
while(temp!=NULL)
{
printf("%d",temp->data);
temp=temp->next;
printf("\n");
}
}
void delete(int data)
{
struct node *ptr=(struct node*)malloc(sizeof(struct node));
struct node *save=(struct node*)malloc(sizeof(struct node));
save=head;
ptr=head->next;
if(save->data==data)
{
head=head->next;
return;
}
else{
while(ptr!=NULL)
{
if(ptr->data==data)
{
save->next=ptr->next;
return;
}
else
{
save=ptr;
ptr=ptr->next;
}}
printf("ELEMENT NOT FOUND");
}
}
main()
{
int choice,num;
head=NULL; //initially head is null
while(1) //for user interface
{ printf("\nOperations On Linklist\n");
printf("Enter your choice\n");
printf("1. INSERT \n");
printf("2. DELETE \n");
printf("3. DISPLAY \n");
printf("4. EXIT \n");
scanf("%d",&choice);
switch(choice)
{
case 1: //If user wishes to insert element in the queue
printf("Enter number to be inserted in the queue: ");
scanf("%d",&num); //getting the element to be inserted from the user
insert(num); //calling insert function
break; //jumping out of switch statement
case 2:
printf("Enter Element To Delete");
scanf("%d",&num);//If user wishes to delete element from the queue
delete(num); //calling delete function and saving the result in an int variable(num)
break;
case 3://If user wishes to display the queue
print(); //calling display function
break;
case 4: //If user wishes to exit(stop continuing the program)
exit(1); //end of while loop
default ://If user enters a number other than 1 to 4
printf("INVALID CHOICE \n");
}
}
}
Output:
