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