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!