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