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!