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