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!