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!