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()
{
*    ** ** ***** *     * *  a;
****   * **   **           * *   **  ****  *  *  *  *** * *
***   * **  *    * * **  * * *   *  (a<=30)
 **  * ****   *      * * **  *    *    **  ***  ***   *  * ** *** * %.2f",a*0.6+10);
*  * ***  *  **      **  **     if (a<=50)
*     ***    * ** * ** *** **      ***    **     * * **    *  ***** *  *  **  * ** * *  ***   * * *
    ** * *  *** * *  ***  *  *   if(a<=60)
  *  ** * * ***  *      **** *** * ****  ****   **  * * *** * ** * %.2f",34+(a-50)*1+10);
  *   ** * *  ** **    * ****  
* **** * * *    * **    * * ***** ** **   *     * **  *   *  *  *  *      *  **   **   
* * ***   *      *  *   **  * * 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 2

Hidden content!
#include <stdio.h>
int main()
{
      * ***   ****  * *         a;
* * **  *  * **  ** **** *    **        * *  **   ** ***  
    if (a<=30)
*  *  ** * ** *****  ***   **    ********  ****** *    **  ** *  ** * ** **   *****
*** **** ** ** ** * ******* if (a<=50)
*   *  **  *  *         ***   * * * *    * ***    ** ** *       *    **   *** **  ***   *  ***    
 ***      *    * ***  *  ****** * if(a<=60)
**   ***   **  *  **  *    * * * *  * * **    ** **** **  *    *  *  *  **** *  * *   * *  
 *  ** ***     ** ** *   
*   *** ** * *  *** *           * *  **     ** *   * ***    * *  *      *** **  *** 
  ** *  **   **  ******  * * *  * 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 3

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
 **  * *  *** **   ** *  * x;
   ** * ** *   *  *****  *    **   ** ******* *** **** 
  ** **      **** * *** **     *** **   *** **** * *  
   *  *** *  **     *   *  **** ** *   %.2f",x*0.6+10);
* * *     ***   ** * * **** *   **** **   ** *  *   ** 
 *** ** ** ****   **  **   ** * *** * * *  ********* * ***
*    * ****  **  ********** ** **  * *  *        **** *****  *    *  
*  ****  **  * *    ***** **** **  *     ***   %.2f",(x-50)*1+44);
*****    **  **  *   **   *   
** ** * * ** * *  *** * *       *** * *   *** ** ** *****   **    **
**   *     *   ********  ***  * 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 4

Hidden content!
#include <stdio.h>
#include  *  * ** *  ** **

int main()
{
** *  **   * ** *   * **    * ** a,b=10;
    * * ****   *    ** ****  ** * *** ** * *** 

**** *        *** *   * **  * *****
     *        ** **** **  ** *   *

** * *  * *** * **  *** **  if(a<=50)
 *   ****   * * *  *    **    *****   **

* **  *  *   * **  *** * *  ***  if(a<=60)
* ***** ********  *** * ******  *  *    ** * *  *  ******   *  **

 *    ****         **   
****      * **   *  *   **   ***    *    

**    ** **  ***     **** **    ** **  ***  %.2f",b);
return 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 5

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
*  **    *  ***    ****  ***  *  a,b=10;
** ** *  **   ** ** ***   *  ***    * *    *     ****

** * * **     ** ** *   *  *   *  *******
   * **  ****  **   *** ********

 * ** * **** ***    *  ****  *  * if(a<=50)
**   **     ***  *    * ** *  ***** * 

*    **  *** *** * *** ** * ****  if(a<=60)
  * ***  ******      **      * ** ** *********  **  **** **** 

**  ** *  ***  ** * * *   **
*  ******     **  *   * 

 ****  * * ***  ***  ***  **   ** *  *    **  *      
return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 6

Hidden content!
#include <stdlib.h>

int main()
{
   * ***   *** *  *      *** x;
 *  *****    **  **  **** *        ** * *  *** * **   
** ** *** **   ****  **** *  ****  *   ** **   *          

*  ** * ** *  *  *     *** **    ***  *      *  *****   %.2f",x*0.6+10);

  * *** ***** * *  *  *** * *  *  **   **  **   *  *          *  

**   **  ****  *  *** ** ** **  ** ***   ****  ** *  ** * * *      %.2f",(x-30)*0.8+28);

 **** *** * **  *  ** *** * ** * *    *   *   ** *  *  * *

******       ***   *  ******** * *** * *  * ***   * **  *  **** ****  *   * %.2f",(x-50)*1+44);

** *    *    *  **** **

 *     *   ** *  **** *****  **** ***  ****  *  *   ******     ** * * %.2f",(x-60)*1.2+54);

*********   **   * **  *****   ***   0;
}

Comments

prog.c: In function 'main':
prog.c:6:5: error: implicit declaration of function 'scanf' [-Werror=implicit-function-declaration]
     scanf("%f",&x);
     ^~~~~
prog.c:6:5: error: incompatible implicit declaration of built-in function 'scanf' [-Werror]
prog.c:6:5: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:9:9: error: implicit declaration of function 'printf' [-Werror=implicit-function-declaration]
         printf("Cost: %.2f",x*0.6+10);
         ^~~~~~
prog.c:9:9: error: incompatible implicit declaration of built-in function 'printf' [-Werror]
prog.c:9:9: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:13:9: error: incompatible implicit declaration of built-in function 'printf' [-Werror]
         printf("Cost: %.2f",(x-30)*0.8+28);
         ^~~~~~
prog.c:13:9: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:17:9: error: incompatible implicit declaration of built-in function 'printf' [-Werror]
         printf("Cost: %.2f",(x-50)*1+44);
         ^~~~~~
prog.c:17:9: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:21:9: error: incompatible implicit declaration of built-in function 'printf' [-Werror]
         printf("Cost: %.2f",(x-60)*1.2+54);
         ^~~~~~
prog.c:21:9: note: include '<stdio.h>' or provide a declaration of 'printf'
cc1: all warnings being treated as errors

Answer 7

Hidden content!
#include <stdio.h>
int main()
{
*  *  ** ****** * * * **  **  a,b=10;
* *  ** ** * **      **    * * ***   * ****  ***** *   
*** ***** *  *   *** **** * * *  ** *  
* *  *** *** * * **    ** *   *  ***********   * * **
* **** ****  *  ******* * if(a<=50)
*  ** **** *   ****   *** * ***** **  *   ** *    *     *    
    else if(a<=60)
***  ******     * ** *** *    ******* **   *   ********** * *
 *  * ****  **  *  *    ***
******* *  * * * ** *   **  *   * *********  *     *   *** *     *  ***
*  ** * ****  * * ***       *  ** *** ** %.2f",b);
* *    *   *  * *  * ****    *     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 8

Hidden content!
#include <stdio.h>
#include      *  *  ** *   

int main()
{
 ** * **   *  ** *** *  * ***** a,b=10;
 *  *    ** *    *** **** **      ****  ****  *   

     * *****   *   *  * * *  **** *   * 
 * * *   * * * **  *********** 

* * ***    *   *****  ***   ** * * if(a<=50)
* * ** ******  *  ** *    *** **** 

   ** * * * ** ** * **    **  *  if(a<=60)
** ***    * **** *  *****  *   ** * *** *      *       **   ***   

 **   * *  ********  *****   **  ***
  *  **   **  *  *  ** ** *  *  * 

*   ** ***     **   ** *** **** **   %.2f",b);
return 0;
}

Comments

Case 0: Correct output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 9

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
* *  * *  *  ****   * ****  a,b=10;
***  ** * **   * ******* ** **  * **  **     ** ** **  *

* * ** * *   ** **  *  **  *  **     
*     *  ***  ** *****   ********

*** * *  * **   *  **     * * if(a<=50)
*     *   *  *** *** **** **** * *     *

  *** ** **** **** **   ** **    * *   if(a<=60)
*** * *  *   *     ********   * * * ***** ** **  ***    *   * 

*  *  *   ***  *  *    *   * ***   *  
*****  * ***** * ** *****  * **    *  * 

*** *   * *** **   * **  ** **** * * *   **  * * *
return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 10

Hidden content!
#include <stdio.h>

int main(){

*          **  ** **    *   a,b,c,d,e;

 ***    ****   **  *** ***   *    *** ****  ** *
*  * *     **  ** * * * * * *** *  **   
 ** * *** *  ***** ***  **  **       *
******  **** **  *   *******   * 
**      *   *** * **** *  **  *    *** *

** * ****     *  ***  * ***   **** **   **  * * * *   ** *   
 **   ****  **  ***  *** ** ***  *   **   *** * * *   *  *  * * %.2f",b);}

***  ****  *    **    *** * ***** **  **   * *** * **  ** && a>30){
*       * *  ** * **      *  *** ***   * *  * **  *  * *        ** %.2f",c);}

*   ** * * **   ***  ****  *  *  ** ***    * *****   && a>50){
*  *    **  **  **   *   *  ** *****  ***    * *** * **  *  *   %.2f",d);}

*  * *  *   ** **** ***   * **** * *   *** * * *  *** ** *
**  **** **** *  * * * * **  **** ** *** * * **      ** * * *   *   * * %.2f",e);}










*  **       ** * **** *  * *** * **   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