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