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!