simple c program with external header file

CArea.h

struct CArea
{
   int x;
   int y;
} CArea;

double area(struct CArea area_samp)
{
   return 0.5 * area_samp.x * area_samp.y;
}

main.c

/*

Declare a structure ( i.e. a type) called CArea & a set (i.e. , a variable)  of this structure called  signature samp. This structure contains two data members of type int (member x & member y). Calculate the area of the triangle ( area=0.5*x*y ) . Display all the values considered for calculating an area & the area itself. lmplement the full code with C language & other necessary functions to run it. 

Bonus : if you can implement it using HEADER  file concept.

*/

#include <stdio.h>
#include "CArea.h"

int main()
{

   struct CArea geom;
   geom.x = 12;
   geom.y = 14;

   double result;
   result = area(geom);
   
   printf("X : %d\n", geom.x);
   printf("Y : %d\n", geom.y);
   printf("Area : %lf\n", result);

   return 0;
}