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!