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 <stdio.h>
int main (void)
{
* ******* * ***   ** *    **  ** a;
   * ***** ****    **    ***  **** b;
 *  ** **   ** *  ** * * * **** ***  ***  *   *
  * **  * *       * *** *   ****   * *** * ****   **** 
    ***     ** * * **  ****** *** * * *  ***** * ***
    }
 *  *    **  ***  **  *******  * *  * * ** * ***  * **   
****   **   ** * *  *  **** *** **       *   * * ****** *     ***
 *   **   *** *  *   *  * 
**   **     *   * *  * * * * ***    **** * **  * * *****  
**   * * ****  **  * *       *  ** * *  **  *   *** ** **
    }
   * *  **       **** * ***
 * ***         * **    *** * *  ****  ****          *
    }
*  *    *****   *   **  *  *    ***  ***** **  
*** ** **  * *   * * *  * ****  0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 2

Hidden content!
#include <stdio.h>
int main()
{
** *** **    *    * ***  *****   price=10,water;
**** *   * ***** **  *  **** *     ***  * * *******
  **  **   **** *   *  * * *      
    **** * *   ***  ******   * ****** *  **    **       ***   * ***   **
    }
 ** *  * ***     ** **   *** * *  * * ** **   * *  * **   *  * * * 
  * *    * *  **    **  *** *   ***  **  ***** * *    * * ***  *    ******* * 
    }
  *   * *  ****   * *  *    *  ** **   **** *  ***   ******   ****     * 
 *  **  *  ** * ** *   ** * ** ****      ** *   **  *** * * * * * *   *     * *    **    * 
    }
 ***    * ** *****  *** ** if(water>60){
    *  ** *  *  **  *   ** ****** *  **  **** * *  * ***   *****      **  
*  **   ********  * ****  * ***  
   *** ** * * ** ***       **  ****  * **  %.2f",price);
 **  **   **    ***  *** ** ***  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 3

Hidden content!
#include <stdio.h>
int main()
{
**** * *    ** ***** ** *  ***  price=10,water;
**        *    **** *  ** ***    ** *      * **   ****   
*    * **   ***   ***    ** * * *  ** *
***** * * ****  ** *   * *  *  **    *  ***** * ** * * **   *** *** *
    }
***  * *  *   * *   ****  ****   *  *     **  * *** **** *   *** * *
* ******  *** *  ** ****   * * *  *  **  *   * **   *  **** **  *** ** *** *
    }
*   *** ** *** **    *     * *   **    *    * * **** **   *****   ** ** ***  
  *  *** ****** ** **  * *  **  ** * **  *  *  **   * **  *  * ** *   ** * ** ****  *
    }
***       * *   ******   **   if(water>60){
 * *    * ******** ***    **    *   **   *  *  * *** * ***       *   *** ** **  ** * *
*****   ** * * ***  *  ****
*       ** *    * * ***  **** ** **  *** ** *  %.2f",price);
* **    ** * *  ******  * ** * 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 4

Hidden content!
#include <stdio.h>
int main()
{
 **  *****  *     *  * ** ** price=10,water;
*** *  * * ***   ** * ****** *  * * * * *** *    *   
*** *     *         **** * *****
  ******** ** *    *    *   *****    *   * 
**  * ******* ** *** *  * **  * *** * ****   *      * * *   * * * *
    }
 **** * ****     * ** * ***** *  ** * *   *      ***    *** **** 
 *****   ** *  * *  **  * ** * ****** ***    * * ** *  ** *     *  *      
    }
 ***** ** ***   *** *   * * *  ** * *** *    * *  *  * * **  * *  *
   * ** ** **  * ***  *  ***  ***** **   * *   **** * *  *   **** ******
*       * *  **  **  *  * *  *
 * * **   ** **** ** *  * *  * if(water>60){
**   * *  ***** *   ** *****   *** **   *  *  * **** *     *   ** * **   ** *  * 
    }
 *     ** *  ***    *  **  ** * ****  ** *** * ****  %.2f",price);
 * **  * **     ***  * *  *   *  *  ** * 0;
}

Comments

prog.c: In function 'main':
prog.c:6:5: error: statement with no effect [-Werror=unused-value]
     water;
     ^~~~~
cc1: all warnings being treated as errors

Answer 5

Hidden content!
******  * ***  **** **  
*
 * * 
*   * *
    * *** 



        ** * * *** *******  *


 
 ***** * ****** **

 ***  

* *   *
 
 
*

*** *** **  

 * *
 
 * **



 *



**  *   **  **

*   *

  *  *  

 


  ****     *

  *

 ** 
 
*
**
 
 
 ** ***  *****  * ******* * *
*
  

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 6

Hidden content!
 **** * **    * *

*    
* ** **  
*   *   * 

  

* *     * * **    **   ** *  *



**    **  ** * *

***

*** *

* 
*

 *    *   * **    

     
 
*****







**  **  * *  * 

*** 

** 

 

 
** *** *** * **

 *  

 **  ** 
 
*
*  ***
 
*
  * **  **  **** *       ***  
 
  

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 7

Hidden content!
* * **  **      **** *   **
*
  * *  ** *******  *
      * 
* * *** *

*

* * ****   **       *    ** 
 


*** *** * *
 
   

* * *  *

**


*** *  *****

    *

 **







   * *  *   *

   **

    *

*


* ** ***   

   * 

* * * 

**
*** *  


    *  *   **    *  * **  * 
 
 *

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 8

Hidden content!
***  ** * *  * **     

*  **   ** ****   * 
**  *
**** *   *  
*
 

  * *  *  *  *  **  **   **



  *  * * **   

 *  

**   *

**


 *      **  **  **

 ** ***

****  



*



 * * * *** **

***

***** *  

 


  * * *     

* ****
 
 *** 

 
*** *

*
**** **  *     ***  *  ** 

 

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 9

Hidden content!
#include *          *   
#include    **    * *  *  *

int water_amount;
double price=10;

int main()
{
** **     * * * ** *  *  *  * ** **** ** *  **  ** ***  * * * * 

  * **   **  * * ** *          * ** * *   ******

***  ** **   *  **** *****  * **   ***  * *  * *** * = price *****    ***  *
   * **  *   ** *** *  ** ** *   ****  *   ****  *** = water_amount - (water_amount - 60);
    **  **** ****   *   **    *  
*     ** *  * *   *  * ** * ** ***   ** * * ** 

**  * *  *****  *    *   * *  * ** *** *******    ** *****  * *  = price     **   ** **
  ***   ****  **    ** *** *** *  ****  *** *  *** *     = water_amount - (water_amount - 50);
    * *     *  **  ** **** * *
 *** ******* * *   *  *  * *  *  *****  *   * *

    *** ** *   *** ***   *  ** **** ****  * **  * *  **   = price  *** ********  *
 ** *     * **** ** ** **     *** *    *** ** **    *  * = water_amount - (water_amount - 30);
      ***  ** ** **  **  **
** *  ***  ***  *    ***** ** **  ** **

**** *    ***  ** ****    ***  ****   *** **** ** **  *    = price +(water_amount*0.6);
 * **   *  *  *    *      *  **  *   * *   * ****  * ** *******   = water_amount - (water_amount - 30)
**** ***  *   *** **  ***** * 

*   * **   *    *** **   ** * ***  * %2.2f", price);
 ** *** ** *   **  *   ** * * ** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 10

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