12-21 Exercise 1: Finish the code to match the input and output. Pointer is required.

Question

8.5k đã xem

We will use this function to proceed and store the result

void find_two_largest(int a[], int n, int *largest, int *second_largest);

* When passed an array a of length n, the function will search a for its largest and second-largest elements, storing them in the variables pointed to by largest and second_largest respectively.

寫 find_two_largest() 函數。陣列做為函數參數找出最大值跟第二大值。

Finish the code below to match the input and output. Pointer is required. 請使用指標。

#include <stdio.h>

void find_two_largest(int a[], int n, int *largest, int *second_largest);

int main(void)
{
	int n, largest, second_largest;
	scanf("%d", &n); //Numbers will be entered
	int a[n];
    //Enter n integers separated by spaces
	for (int i = 0; i < n; i++)
		scanf(" %d", &a[i]);

	find_two_largest(a, n, &largest, &second_largest);

	if (n == 0)
		// Your code here
		//Print No numbers were entered.
	else if (n == 1)
		// Your code here
		//Print Only one number was entered. Largest: 
	else
		// Your code here
		//Print Largest: , Second Largest:

	return 0;
}

void find_two_largest(int a[], int n, int *largest, int *second_largest)
{
	// Your code here (Using pointer to finish)
}

Example input:

Example output:

No numbers were entered.

Example input:

1
67

Example output:

Only one number was entered. Largest: 67

Example input:

5
5 6 7 8 9

Example output:

Largest: 9, Second Largest: 8

[Exercise] Coding (C) - đã hỏi ngày 21 tháng 12 năm 2017 trong Chapter 12: Pointers and Arrays
ID: 38251 - Xem được từ: Không giới hạn - Hiệu lực đến: Không giới hạn
đã sửa ngày 21 tháng 12 năm 2017 bởi semicolon | 8.5k đã xem

58 Trả lời

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Unknown · Answer 1 · 2018-01-18 17:39:01

Hidden content!
#include <stdio.h>

void find_two_largest(int a[], int n, int *largest, int *second_largest);

int main(void)
{

 * *  *    *   * *** *  *  *  n, largest, second_largest;
***  * ***** *** ***  * *  * * **** *     ** &n); //Numbers will be entered
* ***** ***   **   ** ** a[n];
  **** ** **    ***  *** n integers separated by spaces
 * *      **  ***  *     * * (int i = 0; i < n; i++)
  **** *  ***** **  **** ** ** * ***     *   *        * *  *   * %d", &a[i]);

* *  * *    *** * **  ** *     *** **** ** n, &largest, &second_largest);

 **   ************  ******  **** * (n == 0)
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 ** *  ***     * ***  *****   * *  * **** ** *** ****    No numbers were entered.
 * *** ***    ******* *  *** **  if (n == 1)
   ** * * ** ** *   * ****  **** ** ** **** * *  *  *   *      ** * one number was entered. Largest: %d",largest);
 **    *   ** * *  *    **    ** ****      *   *    ** ****  *    Only one number was entered. Largest:
  **   * ***  * * * *** *    *  
  * * ** *** *    *    **  *    * ** ** ******             * *    ****    %d, Second Largest: %d",largest,second_largest);
***  ** *      ****     * *  *     ** ** *** **     *****  * * * Largest: , Second Largest:

*  *  *** * ***   ***  *   * ** *  0;
}

void find_two_largest(int a[], int n, int *largest, int *second_largest)
{
 *   *  **  * ******* **    **  fir,sec;
  * **   * *   * *  * **  * i;
****   *  *** ** *  **** *       ( n == 1 ) {
  * * ***  **** *  **     ********  *   * ***   ******* **     * = a[0] ;
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}

trả lời ngày 18 tháng 1 năm 2018 bởi Unknown (-140 điểm)

112233 · Answer 2 · 2018-01-15 09:29:45

Hidden content!
#include <stdio.h>

void find_two_largest(int a[], int n, int *largest, int *second_largest);

int main(void)
{
    
*****  * *  ** ****** ** *** n, largest, second_largest;
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*     * *** *****   * *  *    a[n];
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****** **      * ** **  (int i = 0; i < n; i++)
**** ***** *  * *        * * ***** ** *  ** *  *  *   *  *   * *  %d", &a[i]);

*  *  *  **     ***** *** *  *  ****** * * n, &largest, &second_largest);

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 ** *  *  * * **    *   ***** ** * **  ** *   ** ** No numbers were entered.
* **   ***** * * **   * ** if (n == 1)
******* **    ***   **   *** * ***   * **  *  *    ****  *** *   one number was entered. Largest: %d",largest);
* * ****** * *** ****    **  **    * ** *    **  ***  *****     Only one number was entered. Largest: 
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* *** * *** * ** ***** * * **  *      ** * ** *****   ****** ******* *  %d, Second Largest: %d",largest,second_largest);
 * *    *** ** * *  *** * ***    ** *** ** *   ***  * *   * * Largest: , Second Largest:

 * *   * ***** *  ** *** **  *  0;
}

void find_two_largest(int a[], int n, int *largest, int *second_largest)
{
   * * *  ***   ** ** ***   *  * fir,sec;
*  **  *   *     * * *****  ** i;
*  * * ***  *  **   * *   *** ( n == 1 ) {
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}

trả lời ngày 15 tháng 1 năm 2018 bởi 112233 (-167 điểm)

Sabrina Lin · Answer 3 · 2018-01-13 00:45:11

Hidden content!
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*** ** * ***   *  *  a[], int n, int * ** ** int  * *   **

int * 
{
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**        **  int ***
** *  **    * * *  *  *  ***     **   n *    *  * *    by   * *
*** * * ** * *  for (int i = 0; i  ** ***  n; i++)
** **          ****   *** *** **  *****  *   ** * * **** * ****

          **  *  *   * * ***  ** n, ** *    * *  *   **  * * * * ** **

* *   *  *   ***    if (n == 0)
*  **** *    * *   *   * *** * ****** ***   ** were * *  *****  * 
*   ** *  ******** else if (n == 1)
 **  *** ***  *  **  *  ** * *   *   *    one **** was  *         *     *   ** ** 
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 *******  ***** *  *  *  * ***   * ** **** * %d, * *  ****  ***   * *     *     *  
*  * *  * **      ** 0;
}

* * **  * ***    a[], int n, int ** *  int   * ***  **** 
{
*** *  ** * ** // Your code here *   ** *   to ***  
 ** ***  *** ** *    i = 0; i * *  n; i++)
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***  *  *   * * * * *  *  **        j = i; j    ****  n; j++)
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****   **   *  *** ** **    ***    ** *  {
** *         *   *      *  *  * *   ***  *  * **    **** * int temp = *  

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**    ** *  * **     * **  **    ** *  *     }
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*  ** *    **   *   *       ** =   
}

trả lời ngày 13 tháng 1 năm 2018 bởi Sabrina Lin (-285 điểm)

PsychoDeity · Answer 4 · 2018-01-10 13:23:07

Hidden content!
***** *** * ***  ****** 

void  **** **   **    a[], int n, int **  **  int * *  ***  * 

int *  ****
{
*   **   **    int n, largest, *      * **** i;
**   **  *  * **   * *  **  *   *** **** *   **  will be entered
   **  ***  ******   int a[n];
 * ****** *      *   *   ** n integers ** *  by spaces
*  * *     ** * for (i = 0; i < n; i++)
**   * *    * *    * ** *    ** * * **   * *  * **  * *   *******  *

***  **   *          * *   * * * n, * ** **  * ** *** **** 

*  ***   **  * if (n == 0)
  ***  *  *      * ***  *  *  *  *  * * **  * numbers were ******   * * 
  ** * *  * **        * *   ** *    //Print No numbers were   * 
 ***  **       * else if (n == 1)
*** ****  **  * * * * * *  * *** ** *      *   * one number was    **  *   * * ** **  *   **
 * * *  **  *** * * *  ****   * * * //Print Only one number was **  * *   *
******** **** * else
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*   **    **    *  *  ** //Print  **  , Second * * *

*****      * * return 0;
}

void  * *  * * *     a[], int n, int  * ** int    * * ***** 
{
 ***  *   **      *  ***   *   i;
****** ** ** for(i = 0; i  * ** n; i++){
* ***      * *  ****** ** * * *** ****      * *  *** *  ** **     ** * *** 
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     ****** *  * ** **  **    *** * **********   * *****  ****  *** **     ***** ** **  *    **** = a[i];
**  ** **    **** * ******   *  * *  *  **  **  * *  else if (a[i] ****   *   * ***
****  *   * * ** * *   * * ****  *  ** ***    ****   ***   ****       * * * **  *   *****   * a[i] **  * * **   *
*  ** *  *** *  * **  * **  ** *   **  ** *    ** * *    **** * **   *  *  ** * *** * **  = a[i];
***         * **         * ***** ** *** * *** *    ***** 
   *    ***   *  *  **   *  
}

trả lời ngày 10 tháng 1 năm 2018 bởi PsychoDeity (-168 điểm)

prog.c: In function 'find_two_largest':
prog.c:33:17: warning: comparison between pointer and integer
         if(a[i] > largest){
                 ^
prog.c:35:21: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
             largest = a[i];
                     ^
prog.c:36:25: warning: comparison between pointer and integer
         } else if (a[i] > second_largest
                         ^
prog.c:37:21: warning: comparison between pointer and integer
             && a[i] < largest){
                     ^
prog.c:38:28: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
             second_largest = a[i];
                            ^

đã bình luận ngày 10 tháng 1 năm 2018 bởi The Judge (4.3k điểm)

410330002 · Answer 5 · 2018-01-04 15:31:20

Hidden content!
#include ** **  **    *
#include *  *  ***  ***


void     *      * a[], int n, int *largest, int * ** *  *   

int  ** ***
{
* * ****     ** *** int n, largest,    * *
* *     **** *     * *   *   *  ***  *    * *
*    *** ** ***** int a[n];
 **  **  *  *** int i;

**      *  **   ****     ** *   
   ***  ***   * * * ** * **  *    *       ***  ** ******** **

* **        * *  *** * ******   *  * *** ** ***** ***

  ** *   *  * if (n == 0)
*** ** * *   * *     * *  ***** **  **  *  **  ****** *   * ** *** numbers were  * **   *  **

 ***  *     **** else if (n == 1)
** * *   *  *   **  *   *** **  ** *** *  **  one number was entered. Largest: *    *    **

*  * *  ****   else
* ***    *    *    *    **  ***** *  * **       *** *   %d, Second Largest: * ** *  ***   *** ** 

** **    *****   return 0;
}

void        *  a[], int n, int *largest, int ** * *** ***
{
 * * *   *** *   int i;
 ****   * **** * ***    ***  * * * *

*  *         **  **** * *   * **
     ** ****    ***  ***   
*    *  ***** *****  *** *      ** *   *    *  ****** *    *** ** **** 
 **    *******  * * ** * ***  * ** **  ***  ** ***** ***   *   **   * * 
    ***   **  **   ***** ** *** **** **    **  **  *  ** ** * * *     * *  
** ***  *  * * *    * * **   *
}

trả lời ngày 4 tháng 1 năm 2018 bởi 410330002 (-16 điểm)
đã sửa ngày 17 tháng 1 năm 2018 bởi 410330002

林上智 · Answer 6 · 2018-01-03 16:21:34

Hidden content!
  ** ** * ** * *  *  *

void *  **   * * a[], int n, int   ****  int   *    *   

int * * *
{
  **      * int i,n, *******  **  ******
** ** *   * *  **     ***       **** *   *  **** * *** will be entered
**   *  *   ****   int a[n];
**    *** *   *  ** *   *  * ** * n   **      by spaces
  * ***    **   * for    *   **      * 
 * ** **   *** *   * **** **    ** **  *   * *  *    ** ***   *** **

* ** *   *  ***  *   ****  n,  *    *** *  *  * *   **** *  *

 *  *  * ** *   if (n == 0)
 **   *              *  ** **  // Your code here
 *    **  * **   *  **  * * //Print No numbers were  ***  
*        *       * ** *  **       ******** ** numbers were  ****  *    *
*  ***     *  else if (n == 1)
 *  *   *  * * *      ** ** // Your code here
 ***  * **    **   * * *** ***  //Print Only one number was * ****   ** 
**        *         ***  ****** *  *   *  *   ** one number was **     **  ** **    * **
* *        *  * *** else
* **  *  *  *** * ** **       // Your code here
*****    ** ***   *****       ** *   //Print * **  , Second **** ***

*  **      **  ** * ***     *** *   *****  * *  **  ** *    ***  %d, Second    **    *  *  ****** * * *   

* ****  ** ****  return 0;
}

void ** *  * ***  a[], int n, int  ***** int *** *   *** *  
{
    *   * **  *   // Your code here (Using pointer to finish)
***     *  ** * int i;
 ******  * *** * **  ***  
* ****  *******  ******** * ** *  **

 *  *   *   ***        ** ** ***  
*  *****  ** *  *     **   * 
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** ** ** *    *    *   *  *  * * ***   **  *** *    *  ****
****** *     *  * * **  ***   **  * * * *    **   * *  *  * ** ** **  **  ** ***  *   ** *    **** **    *
* *  *       * * **  * ****** ******** * ***  **  *  ****   ***  *   * * *****    * ** ** * * *   *
    * ***** **   * * * * ***   ****  * *   *   *      **
  **   * *  * *  **   *  * *

}

trả lời ngày 3 tháng 1 năm 2018 bởi 林上智 (-32 điểm)
đã sửa ngày 3 tháng 1 năm 2018 bởi 林上智

fung2004067 · Answer 7 · 2017-12-30 21:44:05

Hidden content!
*     **   *    ***


//void       *  * * * a[], int n, int  * *  int **    *    ** 

int * *** **  largest, int  ** *  ****
{
       *  * * return (largest == *** **** **
}

void  *  * *     * *  a[], int n, int* ****   int* ***  ***  
{
 * ***   **   int i;
   * *  * **    int  * *** = a[0];
* *  *      ** *** for(i = 0; i   n; i++)
 ****      ** {
*** **    ***    *****    ** * **  if (a[i] >  *** *
 * ** * * * * * ****   *  ** *  ***** *   ***
 ** ** ** ***** *    * * * ** *         ** ** * * * * _largest = a[i];
  *      ** **    *  *  * *      
 ** * **   ** ***  }
 *  * *** **  *  ***** = * * **
  *  *   *** * 
*** ** * **** *  int *  *  = a[0];
***   *  **  *   *    *****  * = 0; i  *    n; i++)
  *  ** ** ***  *  ** **     
  **    ***  ** *   **** ****   *   ***   *  if (a[i]   *   ***  ****** ***  ** * != a[i])
  *  **  ********  * * * *     * * * * {
  **  * **    * ** **** ***  *******    **** ***  *    *   = a[i];
  ***  *      *      **      **** }
**  ***   *  *  * }
     * *   ** *    **  ** = ***   *
}


int ** **
{
   * *  * ***** int n, *   ***  ** * 
*** * ****  **  *  * ** ** *       * *    ********* *    *  will be entered
**** **   *****  int a[n];
 *     * *   * ** *        n   ** *  * *   by spaces
   ***       ** int i;
  ** *   * * *  for (i = 0; i < n; i++)
****      **       * ** *
*       ** *  **  *  ** *****  ****  **  *  * **** ** ** ***  ***  * *****     ***  ***  *
 *   *   ***      ***** ** *



 **      ****     * * **  * n,   ** **  * * *  ***   * *   * 
   *  ***** *  * * * * 
     *   *** *****  ** * * *     *    *  *   ** ***     n = 1;
 ** ***   *  * ** ****
*  ***   **     if (n == 0)
**  * *  *    *   **        *  *  {
* * *  *    * ** ***      **         * *** *  * **   ***** *  ** **** * numbers were   * * ** * **
** **** **   **     ** ** ** ** * }
* ****  * * * else if (n == 1)
* ** **  ***  *     **  * *     *    {
*  *  *   *    ** **  * *  *    * *  **** **** ***** ***  **  **   one number was entered. * * * *** *  ****** 
 ****    *  *  * * * **** }
** ***       ***** else
* **   * **   * * * *    * {
 **  *    **** ** * * * * ** *  ****     *  *   * **  * *******       %d, Second ***     ***   **  *      
***  *  * *       ***  *  *   }

**** * * ***  *  return 0;
}

trả lời ngày 30 tháng 12 năm 2017 bởi fung2004067 (-214 điểm)

fung2004067 · Answer 8 · 2017-12-30 21:27:35

Hidden content!
 **   ** * ** *  *   


//void   *  **  * a[], int n, int ** ** * int    **   **** 


void  * *  *  **    a[], int n, int*  * *   int* *     * * *
{
   *   ** *  int i;
 * * *  * * int *  = a[0];
 ** **  *   * * for(i = 0; i    **   n; i++)
 ****    ***  {
* *   *   * ***** **    **   if (a[i] > ***  * 
** *    **  **  **** *** ** * ** *   * *   
 * *  * ** *   * * * ***  ** * **** **   **  *  _largest = a[i];
*  *    ** ***  **  *    *   ****   *  *******
   ****  * * *** }
  ** * *  * **  *   * =  *      
* ** ** *   * 
** ** ****   int  * * ** = a[0];
 * *** * *   * ***  * * *  *  = 0; i < n; i++)
* *****  *  *   * *  * * 
******  * **  * **   * *  *    ** * **** ** if (a[i] > *  ***    * *       *     != a[i])
** *  ***  *   ***  *** * * *  * *** * {
 ****   * * **      * *     *  * ** * * *** **  **  * ** **  **   * = a[i];
 *****  *  *  ***  *    *** }
****           * }
*  ** *  ***  ** * *    = ** * 
}


int ****  
{
* **** ** ****  **  int n, * ***   *   *** **
****    ** **  * **   * * * *  *** **   **      *     * ***  *  **  will be entered
   * ** *  * * int a[n];
*      ** **       *   *******  n  **   **** *   by spaces
 * *  * *   ** int i;
  * **      ****  for (i = 0; i *    n; i++)
 *  ****   * * * *** **
   *  * ** ** * ****    **  **  ** **   * **** *  ***  ** * * *         **  *  * *  **  **
 *  *       *  * *   *    *   



   **  **  ****    *  *  ***     *  * n,  ***    ****  * * * ** *      *** *** 

***** * * * *  if (n == 0)
  * **  * * *  * *   *    *    ** {
   ****  *  *   *    * **  ** *      ******   * ******** *** numbers were  * * * **   *
 *   ***  **** * *   * ** *** }
*  **   *  * else if (n == 1)
 * ***** ***** ** **  * *    * **  {
  *    * **    *  * **  ***   **** ** * * * * * ** * ***   *** ** *** one number was * ****    ****  ** ****  
 ** *** ** *    **  ** **  ** }
 **  * * *  *  else
 * *** *   **  *  *    **  ** {
*  ** * *  * *       ***** *      **     ***    *  ** * **** *  * * * * ** *  * *** * %d, Second   * *  *  *  **** *  * * **** *  
   *  **   ** *   *** *  ****  }

 * *  *  *     return 0;
}

trả lời ngày 30 tháng 12 năm 2017 bởi fung2004067 (-214 điểm)

fung2004067 · Answer 9 · 2017-12-30 20:03:23

prog.c: In function 'find_two_largest':
prog.c:10:11: warning: comparison between pointer and integer
  if (a[i] > largest)
           ^
prog.c:12:16: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
        largest = a[i];
                ^
prog.c: In function 'main':
prog.c:40:14: warning: missing terminating " character
       printf("Only one number was entered. Largest:%d,&largest);
              ^
prog.c:40:14: error: missing terminating " character
       printf("Only one number was entered. Largest:%d,&largest);
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.c:41:3: error: expected expression before '}' token
   }
   ^
prog.c:41:3: error: expected ';' before '}' token
prog.c:44:14: warning: missing terminating " character
       printf("Largest: %d, Second Largest: %d,&largest, &second_largest);
              ^
prog.c:44:14: error: missing terminating " character
       printf("Largest: %d, Second Largest: %d,&largest, &second_largest);
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.c:45:3: error: expected expression before '}' token
   }
   ^
prog.c:45:3: error: expected ';' before '}' token

~~~~~~ · Answer 10 · 2017-12-28 17:25:24

Hidden content!
#include     *   **   **
#include  * *   *   * * *


void * **** *   * a[], int n, int *largest, int    * ****
{
*** * *   *    
 * *****  * *      if (n==0)
* *  **    *   {
 * * * ** *  *****       *  *** * ***  *   numbers were *  ** *   *
   ***    * **   }
  * *   **** * else if (n==1){
* ***  ** ****** * *  *** * ***   *
  *** *  *** * *   * *    **  **   *  *** **   
*  * **     * *  **  *   ** * * ***  * *   **  one number was entered. Largest:  * ** **  *    
    ***  *** *  }
*  *   * ***** else{
 ***** *    *     *  * **  * *  * int i, ** **   ***    **
 *  ** *   **  * *     *** **  * * ** *
   *  **   *   * ** * **    *  *     *  *** ****
** **  *    ** *  **  **   * * for (i=0;   **   i++)
* **   ****** ** ***    ****  {
***  * ***  **  *  ****  ** *  * * *  * * *  *   * *** **** ** *** ***  
** * ** ***     *   ****   * **  * * *** *   *  * ** ** ** * *  ***  **   ** 
**     * ***** *   ** * * ** *  **   * * * }
* ***   *****   * ** *  ***** }
 * *  * *** * * *  ** * *       *       
 **   **    ***  **  ** * * *    **   ** *****  %i,  *   **    **

  *** **   ****  ** **  * ** for (i=0; **** * i++){
  *  *  ** * *  *** *    ** *   *     *    * **    * ** * ***  **  ** * *      **      * *   ** *   ****  ** *   *** 
           * *  * ***** *  * ** * *       *       *** ***   *   * * *     **   ** *    *****   ** * * 
* *   *   *** *** *  *     **  * ***   *  ***    **  *** *  *  }
* * **  *    **   ***   * *** }
  * ** *****  *       * **    * *    *    **     ** *** *  ****  
  * **    **  *  *  * ** **   *  *  * ****   *      *         ****** *  Largest:    * **** *     *** ** 

 * *  * *  }
}

void **** **      ** a[], int n, int *largest, int *  * * * 

int  ** **
{


  ***       int n, largest, *  ***   

**    *    **  * * * *   **     **    *** * **
 * ** *    *     int a[n];

* *** *** *** for (int i = 0; i < n; i++)
     * * *  **      * ****   **   *  **   * ***      **    ***** 

**   *  **  * * * *   ** n,   *** * **    *     *   ***


    **  * *** return 0;
}

trả lời ngày 28 tháng 12 năm 2017 bởi ~~~~~~ (-304 điểm)
đã sửa ngày 28 tháng 12 năm 2017 bởi ~~~~~~

12-21 Exercise 1: Finish the code to match the input and output. Pointer is required.

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