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