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