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