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()
{
* *  ** *  *  ** **  *** * **   **  **  *  **** **  ** **** *

  * ******  * **  **  *    * *****   ***  ** **

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   ***** ****  ** *   * **  **
 * **  **  ***** *   * *** ** ** ** *** ** ** *

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 ** ***    *****  ** *****  ** *      *   ***   ** = 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!