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