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