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