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!