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!