# Program to perform Linear Search using recursive and non recursive function in C.

```#include <stdio.h>
#define MAX_LEN 10

void l_search_recursive(int l[],int num,int ele);
void l_search(int l[],int num,int ele);
void print_list(int l[],int num);

void main()
{
int l[MAX_LEN], num, ele;
int ch;

clrscr();

printf("======================================================");
printf("\n=====================================================");
printf("\n[1] Linary Search using Recursion method");
printf("\n[2] Linary Search using Non-Recursion method");
scanf("%d",&ch);

if(ch<=2 & ch>0)
{
printf("Enter the number of elements :");
scanf("%d",&num);
printf("\nElements present in the list are:\n\n");
print_list(l,num);
printf("\n\nElement you want to search:\n\n");
scanf("%d",&ele);

switch(ch)
{
case 1:printf("\n**Recursion method**\n");
l_search_recursive(l,num,ele);
getch();
break;

case 2:printf("\n**Non-Recursion method**\n");
l_search_nonrecursive(l,num,ele);
getch();
break;
}
}
getch();
}
/*end main*/

/* Non-Recursive method*/
void l_search_nonrecursive(int l[],int num,int ele)
{
int j, f=0;
for(j=0;j<num;j++)
if( l[j] == ele)
{
printf("\nThe element %d is present at position %d in list\n",ele,j);
f=1;
break;
}
if(f==0)
printf("\nThe element is %d is not present in the list\n",ele);
}

/* Recursive method*/
void l_search_recursive(int l[],int num,int ele)
{
int f = 0;

if( l[num] == ele)
{
printf("\nThe element %d is present at position %d in list\n",ele,num);
f=1;
}
else
{
if((num==0) && (f==0))
{
}
else
{
l_search(l,num-1,ele);
}
}
getch();
}

{
int j;
printf("\nEnter the elements:\n");
for(j=0;j<num;j++)
scanf("%d",&l[j]);
}

void print_list(int l[],int num)
{
int j;
for(j=0;j<num;j++)
printf("%d\t",l[j]);
}
```