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!