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

Question

19.7k 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 | 19.7k 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];
*  * *   * * * **** *** ** * **    * 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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*  * ****  **     * *** *** *   *   ** *         **     ** ***   ***  * s=%d\n",fir,sec);
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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: 
****  * * **  * * * *  ** * * *
 **  ***   * * * ***  * * **  * * *** *** *** *  * * * ** **   * *  * %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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}

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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int  * * ***
{
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* ****   **  *   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] = *  
** *    **** * *** * * *  *   *****     **  }
****      *    **   *  * * }
****  *   ** * }

* *   * *       ** * =  ***

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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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