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!