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