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!