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