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