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!