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

 

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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!