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