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