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