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