C Program to search the linked list.

Data structures using C,
Write c program to search the linked list.
Linked list is a data structure in which the objects are arranged in a linear order. In this program, we sort the list elements in ascending order. Read more about C Programming Language . and read the C Programming Language (2nd Edition). by K and R.

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#include<stdio.h>
#include<conio.h>
#include<malloc.h>
struct l_list
{
int info;
struct link *next;
}
start, *node;

int search(int);
void main()
{
int no,i,item,pos;
clrscr();
start.next=NULL;
node=&start;
printf("How many nodes, you want in linked list? ");
scanf("%d",&no);
printf("");
for(i=0;i<no;i++)
{
node->next=(struct l_list *)malloc(sizeof(struct l_list));
printf("Enter element in node %d: ",i+1);
scanf("%d",&node->info);
node=node->next;
}
node->next=NULL;
printf("Linked list(only with info field) is:");

node=&start;
while(node->next!=NULL)
{
printf("%d ",node->info);
node=node->next;
}
printf("

Enter item to be searched : ");
scanf("%d",&item);
pos=search(item);
if(pos<=no)
printf("Your item is at node %d",pos);
else
printf("Sorry! item is no in linked list.a");
getch();
}

int search(int item)
{
int n=1;
node=&start;
while(node->next!=NULL)
{
if(node->info==item)
break;
else
n++;
node=node->next;
}
return n;
}
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C Program To Implement Interpolation Search

Interpolation search is an algorithm used for searching a given value in an ordered indexed array. Interpolation search is sometimes called as extrapolation search. For uni formally distributed data items Interpolation search is the best method. for example: library books directory. Read more about C Programming Language.

/***********************************************************
* You can use all the programs on www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact info@c-program-example.com
* To find more C programs, do visit www.c-program-example.com
* and browse!
*
* Happy Coding
***********************************************************/


#include "stdio.h"
#include "stdlib.h"

#define MAX 200

int interpolation_search(int a[], int bottom, int top, int item) {

int mid;
while (bottom <= top) {
mid = bottom + (top - bottom)
* ((item - a[bottom]) / (a[top] - a[bottom]));
if (item == a[mid])
return mid + 1;
if (item < a[mid])
top = mid - 1;
else
bottom = mid + 1;
}
return -1;
}

int main() {
int arr[MAX];
int i, num;
int item, pos;

printf("nEnter total elements (num< %d) : ", MAX);
scanf("%d", &num);

printf("Enter %d Elements : ", num);
for (i = 0; i < num; i++)
scanf("%d", &arr[i]);

printf("nELEMENTS AREn: ");
for (i = 0; i < num; i++)
printf("%dt", arr[i]);

printf("nSearch For : ");
scanf("%d", &item);
pos = interpolation_search(&arr[0], 0, num, item);
if (pos == -1)
printf("nElement %d not foundn", item);
else
printf("nElement %d found at position %dn", item, pos);

return 0;
}
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