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