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!