10-12 Exercise: A water supply company

Question

A water supply company charges the water consumption, as follows:

a) Fixed amount of 10$.
b) For the first 30 cubic meters 0.6$/meter.
c) For the next 20 cubic meters 0.8$/meter.  
d) For the next 10 cubic meters 1$/meter.  
e) For every additional meter 1.2$/meter.   

Write a program that reads the water consumption in cubic meters and displays the bill.
寫一個輸入水的用量 輸出水費的程式

Example Input:

25

Output:

Cost: 25.00

Example Input 2:

44

Output:

Cost: 39.20

Example Input 3:
 

75

Output:

Cost: 72.00

 

Answer 1

Hidden content!
#include **** *   *** * 
#include   * *  ** ** * 

int water_amount;
double price=10;

int main()
{
  *  *   * *  ****** ** ** ** *  ***   ** **  ***    *   * ***

* **    *** ** * ****     * * * **** 

   * *** **** *   *   ** ** * **  **  * *  *     *  = price    * ****  *   * 
  * * *** *   **  ***** **   * * *     ***    ****  *  = water_amount - (water_amount - 60);
*     * *  **** **    * **
 * ******   *****  * *** *** * *       *   *

 *    *****  ********** *** *  *    **   * * * * **** = price +(water_amount-50)*1;
* *  ***  *  *  ******    * **** *  ** * *** ***   *  *** **** * = water_amount - (water_amount - 50);
** *  *  **    ********      
**  ***** *  **   ** ** * ****** **      **** 

     *    **   *        **** *  *** *  * ** *     * *  *  ***  = price * * ** *** 
** * * *  *   * *   *** **   **       **  *  ** ** ***  **  ***  = water_amount - (water_amount - 30);
* * *  ** **  ***  **   
   * *  * *  *  * **   * ** ** *  *  *  

*   * **  *** *  * *    *    ** ***  *  ***  ****  **  = price +(water_amount*0.6);
*   ******      ********  ** * * **   *   * ** ****** **    *  ** *** = water_amount - (water_amount - 30)
** *  **** *  *   ***  **  

* * *     *  **   **  *   **  **** **** * *     price);
*  *  * *  ** * * *   *  *****  0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

---

Your output is not exactly the same with what the question asks you to do :)
Cost: 25.00

---

Thanks!