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!