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