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