#include <stdio.h>


float height        (float v, float t);
float vertical_speed(float v, float t);

///////////////////////////////////////////////////////////////
int main()
{

    float v = 200,
          t =   5;
    height        (v, t);
    vertical_speed(v, t);
}
//////////////////////////////////////////////////////////////

   float height(float v, float t)
{

       int const g = 10,
                 i =  2;

       float height = v*t - (g * t * t) / i;


       printf("height = %.2f\n", height);
       return 0;

}
   ////////////////////////////////////////////////////////////
   float vertical_speed(float v, float t)
{
       int const g = 10,
                 i =  2;

       float vertical_speed = v - g * t;


       printf("vertical speed = %.2f\n", vertical_speed);

       return 0;
}