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!