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