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