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