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