/*This program will calculate the volume used by a box that contains a number of tins.
  The program will also calculate the number of tins in the box and the volume wasted. */

/*width_box=Width of the box in use
  height_box=Height of the box in use
  lenght_box=Lenght of the box in use

  width=The number of tins fitted along the width of the box
  lenght=The number of tins fitted along the lenght of the box

  height_tin=Height of the tin in use
  diameter_tin=Diameter of the tin in use(twice the radius)
  pi=is a costant used to calculate the volume of a cylinder and is equal to 3,141592
   , which was rounded to 3.142

  volume_used=Total volume of the tins in the box
  volume_box=Volume of the box in use
  volume_wasted=Volume wasted(Volume of the box-Volume Used)

  layers=Number of layers of tins
  tins=Total number of the tins*/

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#define pi 3.142

void main(void)
{
  float width_box,height_box,lenght_box;
  float height_tin,diameter_tin;
  float volume_used,volume_box,volume_wasted;
  float tins,layers;
  float width,lenght;
  char buff [20];

  /*The user inserts details related to the width of
  the box and the diameter of the tin*/

  printf("Type in width details.\n");
  do
  {

  printf("\nType in the diameter of the tin:(cm)\n" ,diameter_tin);
  diameter_tin=atof(gets(buff));

       if (diameter_tin <= 0.0)
       {
       printf("\nPlease, type in an appropriate value for this figure.\n");
       }

   }while(diameter_tin<=0.0);

  do
  {

  printf("Type in the width of the box:(cm)\n" ,width_box);
  width_box=atof(gets(buff));

       if (width_box <= 0.0)
       {
       printf("\n\nPlease, type in an appropriate value for this figure.\n");
       }

   }while(width_box<=0.0);

  printf("___________________________________________________________________\n");

  /*The user inserts details related to the lenght of the box*/

  printf("\nType in leght details.\n");
  do
  {
  printf("\nType in the lenght of the box:(cm)\n",lenght_box);
  lenght_box=atof(gets(buff));

       if (lenght_box <= 0.0)
       {
       printf("\nPlease, type in an appropriate value for this figure.\n");
       }
    }while(lenght_box<=0.0);

  printf("___________________________________________________________________\n");


  /*The user inserts details related to the height of the box
  and the height of the tin*/

  printf("\nType in height details.\n");
  do
  {
  printf("\nType in the height of the tin:(cm)\n",height_tin);
  height_tin=atof(gets(buff));

       if (height_tin <= 0.0)
       {
       printf("\nPlease, type in an appropriate value for this figure.\n");
       }
    }while(height_tin<=0.0);

  do
  {
  printf("Type in the height of the box:(cm)\n",height_box);
  height_box=atof(gets(buff));

       if (height_box <= 0.0)
       {
       printf("\nPlease, type in an appropriate value for this figure.\n");
       }
    }while(height_box<=0.0);

  printf("___________________________________________________________________\n");

  /*The number of layers is defined here*/
  layers=height_box/height_tin;
  layers=(int) layers;/*Note the use of cast*/

  /*The values lenght and width are defined here in order to gain the correct value for tins*/
  lenght=lenght_box/diameter_tin;
  lenght=(int)(lenght);
  width=width_box/diameter_tin;
  width=(int)(width_box/diameter_tin);

  /*tins is defined here*/
  tins=lenght*width*layers;
  tins=(int) tins;
  printf("\nThe total number of tins in the box is:%8.0f \n",tins);/*No matter how many decimal
   places are positioned on the float value,this still appears as a whole number.*/

  /*volume_used is defined*/
  volume_used=(diameter_tin/2)* (diameter_tin/2) * height_tin * pi;
  printf("\nThe volume used by the tin is: %8.2f",volume_used);
  printf("cm3\n");
  /*volume_box is defined here*/
  volume_box=height_box*lenght_box*width_box;
  printf("\nThe volume used by the box is: %8.2f",volume_box);
  printf("cm3\n");
  /*volume_wasted is defined here*/
  do
  {

  volume_wasted=volume_box-volume_used;
  printf("\nThe volume wasted is: %8.2f",volume_wasted);
  printf("cm3\n");

   if (volume_wasted <=0.0)
   {
   printf("There isn't any volume wasted.");
   }
  }while(volume_wasted <=0.0);

  printf("\n_______________________________________________________\n");

/*The inputs inserted from the user are displayed.*/
printf("The following details are the values you have inserted.");
printf("\nWidth of Box: %8.2f",width_box);
printf("cm");
printf("\nHeight of Box: %8.2f",height_box);
printf("cm");
printf("\nLenght of Box: %8.2f ",lenght_box);
printf("cm\n");

printf("\nDiameter of Tin: %8.2f",diameter_tin);
printf("cm");
printf("\nHeight of tin: %8.2f",height_tin);
printf("cm");

printf("\nPress any key to quit....");
getch();
}

#include <stdio.h>

int main() {
    char in;
    while ((in = getch()) != 13) {
          printf("%c %x  = %d \n", in, in, in);
    }
}