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!