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