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