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!