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

 

Show more...

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