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