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