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