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!