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