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