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