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

Question

17.2k 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 | 17.2k 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)
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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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*****  * ****  **** * ****   **
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* *    **** * * * *      ******  ***      *   *   **  **
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    }
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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
* *  ** **    ** *  **  *  ** (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: 
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 *  *     * *  *   * * ** ** **  ** *     * ***  **   *  * 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!
* *  * *  *  * * * **

     ** * * ***  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 = * * 

** *    *     *** *   **   *  ** * *   *    * **   * ***  * = ****

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