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!