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