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