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