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

Question

15.3k 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 | 15.3k 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)
   *******  *      ********* * *  *** * ** * * **  *  * ** *  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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*****  * *  ***    *         *****  ***  **** ** *** * ** **
 *  **   ***** *  * * ** * ** ****  ***  * * **** *  ****   * ** **  *   s=%d\n",fir,sec);
    }
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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)
{
    
**** *  *         *  *   *** ** n, largest, second_largest;
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** *** ** * **** *     ** **  ** 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)
* ***  **  ***** * *****    *** **  ****   *******  **  **  ** 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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 * ***  **     ** *   ** **  *    **    ***  %d, Second Largest: %d\n",fir,sec);
}

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 *** *
*  * ***  int  * *
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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;
* **    *   * *   ***  *  *  **
   ***    ** * **     *  * * *** *  *

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