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!