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