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!