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