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!