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

Question

14.7k 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 | 14.7k 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];
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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);
*** ** *  * **   *  ****   ***  ******   * * * **   **   **  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)
{
    
   *   ** *   * *****  *   ** 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)
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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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*** * **  *   **  * ** ***  ** **   *  ****
***   *         ** ****   *  
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* *      ** ****  ***
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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!
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   * *   **** 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++)
**   ***  ** *   * * *     *  {
   ***     **  **    **     *  **     * * **  ****  ***     * *** 
* ** *    * **  ** *  *   *   ** * ****  **  * {
 ** * ** **     **     *   * **** * *  *   **  *** *   *   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++){
*   *   **** ****           *  * *    ****  *  * ** *    ***  * **  * * * **  
*  ** *  * ***** ****  ** *   ** * ****    *** ** * *** ** *  * *** *  *  *     = **  **
 ******* *    * * * ** *  * ****  * **  *** **** *  *****     ** ***  *  *** *  * *   = 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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