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