#include<stdio.h>
#include<conio.h>
int main()
{
    int n,i,a[15],num;
    printf("\nHow many elements are there ");
    scanf("%d",&n);
    printf("\nEnter the elements ");
    for(i=0;i<n;i++)
    {
                    scanf("%d",&a[i]);
    }
    printf("\nEnter the element do you want to search ");
    scanf("%d",&num);
    for(i=0;i<n;i++)
    {
                    if(a[i]==num)
                    {
                    printf("\nElement is present ");
                    break;
                    }
                    else if((a[i]!=num)&&(i==n-1
                    ))
                    {
                         printf("\nElement is not present");
                    }
    }
    getch();
}

int linearSearch(int a[],int ub,int key)
{
    for(int i=0;i<n;i++)
           if(a[i] == key) return i;
    return -1; //not found!
}

int linearSearch(int a[],int ub,int key)
{
    int flag = 0;
    for(int i=0;i<n;i++)
           if(a[i] == key)
           { flag = 1; break; }

    return (flag)? i:-1; //not found!
}

sorry, abt the typho in the previous post...

"ub" shud be "n"...