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