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