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