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