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!