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

Question

13.2k 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 | 13.2k 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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    }
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** * ** **  * ****  ** **   *** ****  * *   * *    * %d, Second Largest: %d\n",fir,sec);
}

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)
{
    
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** ***    **   ** * ** * a[n];
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*   * ** **  *** **  * * ** *  * (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)
** *  *** * *   *** ** *** *** **    ****** *  ** **     * **   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 ) {
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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!
* * *   ** ***  *** ***

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

int *** * 
{
* *   *  ** * * * int n, ****  * *  * 
*  ****  *     **** *   *****   * * *** **   *   * will be   
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*  ***  **** for (int i = 0; i    **** n; i++)
 **         **  ***  ** *     *     ** *  * *   ***  **   ** 

   *  * *** *   ***  *** ** 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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**  *  * * ** ** * ****    ** *  * *** * ** ** *  {
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***  ** * *  ** **     **   * ***** ***  *  *   * **  ** ***  = **

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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++){
* **** ***  * *  *    *** * ***  * **   *   ** * ** * * *   
*  *** ****** ** ** *  * *****   * *** ****   * * ****   *     ** * *  ** * ** *  * *** =    ***
     * ****** * * ** * *** *       *   *  *       * *****  *  *   **  *       ** *    *** = 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    *******
{
*  ****  *   ** *  
* ** **    **** 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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