Write a C program for Linear Search Using Function

Write a C program for linear search using function:

Program:-
   
#include <stdio.h>
    
    long linear_search(long [], long, long);
    
    int main()
    {
       long array[100], search, c, n, position;
    
       printf("Input number of elements in array\n");
       scanf("%ld", &n);
    
       printf("Input %d numbers\n", n);
    
       for (c = 0; c < n; c++)
          scanf("%ld", &array[c]);
    
       printf("Input a number to search\n");
       scanf("%ld", &search);
    
       position = linear_search(array, n, search);
    
       if (position == -1)
          printf("%d isn't present in the array.\n", search);
       else
          printf("%d is present at location %d.\n", search, position+1);
    
       return 0;
    }
    
    long linear_search(long a[], long n, long find) {
       long c;
    
       for (c = 0 ;c < n ; c++ ) {
          if (a[c] == find)
             return c;
       }
    
       return -1;
    }