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

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

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Thanks!