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!