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