#include<stdio.h>
#include<math.h>
// use #gcc <filename,c> -lm    to compile while using math.h
int main()
{
  float x1=0,y1=0,x2=0,y2=0,k=0;
  printf("Enter the coordinates of point A in format: x1,y1 ");
  scanf("%f,%f",&x1,&y1);
  printf("Enter the coordinates of point B in format: x2,y2 ");
  scanf("%f,%f",&x2,&y2);
  printf("enter the value of K (K>=0)");
  scanf("%f",&k);
  float x=0,y=0;
  /*  Now let P(x,y) divides AB in ratio 1:k  **
  *   Then x = x1 + (|AB|/(k+1))(cos (slope))  ie - x = x1 + (|AB|/(k+1))* ((x2-x1)/|AB|)  **
  *    hence , x = x1 + (1/(k+1)) * (x2-x1);  **
  *    similarly , y = y1 + (1/(k+1)) * (y2-y1);  **
  */
  x = x1 + (1/(k+1))* (x2-x1);
  y = y1 + (1/(k+1))* (y2-y1);
  
  printf("The X coordinate is %f\n",x);
  printf("The Y coordinate is %f\n",y);
  
  return 0;
}