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