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