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!