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