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

Question

18.6k 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 | 18.6k 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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**  * ***** *  * *   * ************ * *** %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;
     ** ***** *** **** **  ** *** **  &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);
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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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       *** *   * *       ******  * ** *   %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 *   
 *     **   ** *   * **  ** * **  n  ** * ******* by *  *
 **** ** *  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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      *    * *  ** **   *  * *   *  *    *   ** *  **** ** * * = **

* *    **  *** ****  **  *   * *** *  * * *** * ** *        a[i] = *
   ** ***   **    * * *     **   * *      * }
* *  * **** * *   *    *  }
*** **       * *    }

**  *     *    * *  * = * 

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

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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