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

Question

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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 | 9.5k 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);
*** ****  **  * *   * * *     **  **    **    **** * **   *  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  **
 ****  *  *  *** * **  * *  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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  ** * **   *** *      **  * * **  * *  * * *    *     *  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++)
***     * *      * * * * * *** {
* *    ***        *   **  *     *    *   *  * * *   *   ****  
* **** *    *     ****   *  * * ** * ***** ** **  ** **    * *** ** *  
** *   **   ** ****** ***        *    **   * }
   **    *   *  ** * ** **** ** }
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*** *      **  ***    *     * ** *****     *** %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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