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!