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