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

Question

12k 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 | 12k 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)
* *  ** * ***   *  **   ***** ***** * **** *    * ** numbers were entered.");
 ***   **  * * *  * *  **** **  ** ** * ***      * *  * * * ***  *  No numbers were entered.
 *    ****  * *** *    ** * ** if (n == 1)
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 * **** ** * *   *   ***  *  ****  *   *  * *  * **** ** *   *  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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***  **   **  * *     * **  **** * **** *** ** * **    * *      s=%d\n",fir,sec);
    }
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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;
***   ***     * * * *  * ****** **  *****  &n); //Numbers will be entered
    ** *  *  * ******         *  a[n];
* * *****  *  * *   * **     * n integers separated by spaces
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*  ** * *  *** **          * **    *      ***   * *     **   %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);
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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 ) {
       *   *   *   *    **  *  * *** ** **   *   *  * = a[0] ;
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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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int    *  
{
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 ****  **     for (int i = 0; i  **   n; i++)
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 *       * *   * *   * **    n,     * ** **   * *  ***  *

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

***   *********  a[], int n, int *  *   int      **    *
{
   *** *  ** *  // Your code here  *  *  ****  to  ** 
 **   * **  *  *   *   i = 0; i *  *** n; i++)
 *   * * *   *  * {
* ****** * *** * ***   *  **  ***   ** 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
***   *   * *  **  ****  **   * * *        %d, Second    * ** ** ******   *     **    **  **
* ****  * ****   **  *  *******  //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;
 *     *   * *  *** *** ****
*  *     *  **  * **  ***** ***

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

}

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