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

Question

17.7k 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 | 17.7k 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);
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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;
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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];
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** **** * * *****  *     * * ** (int i = 0; i < n; i++)
** * ***** *   **** *****  **** ***      *    **   * **    ***** **** %d", &a[i]);

* *** **    * **  * ***  *  **** **  *** * * * n, &largest, &second_largest);

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  *  ** ******     *   *** **  ******  ***   * ***    No numbers were entered.
 ****    *******  * **   * *   if (n == 1)
* * *     **** **  * *** *  *  *  ******** * *  *** *****  *   *   * * **   one number was entered. Largest: %d",largest);
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***     *    *  * *****  * ** ****   *  * ** ***  ** Largest: , Second Largest:

*  **  * * *  * *** * **   *  0;
}

void find_two_largest(int a[], int n, int *largest, int *second_largest)
{
 * *** **     * **   * * ** fir,sec;
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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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* *   *  ***** if (n == 0)
**    **  * * *   * ***   * *      ** ***     * * were  ** * * **   *
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*** *    ******    **   *  *   * * *  ***** * one **  was    **   *  ** * *** * *     
* *   *  ***   else
*  *  *   *   * *      *     *   ** ***  * *     %d,   **  ***  *  **     * 
 * ****     ** * ** 0;
}

 *   *** * **** *    a[], int n, int **  * int * **  * **
{
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  *   ***        i = 0; i ** ** * n; i++)
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* * ** * **  **  *  * **  * *  *  *   * j = i; j  **  n; j++)
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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
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* ****  * ****    ***         ** ****    ****** * numbers were *  *      **
  **   ** *** *  **  *   * *  * //Print No numbers were  ***
* * * *    *       else if (n == 1)
* ****      *  ****  *****      ** ** * **   *    one number was   ***  ** *  **** *  * *** 
  ** ** * ***    ***  **  *** //Print Only one number was  *  **    
**     ***  else
**    ***    *   *   * ***  * ** * *** * *  ** %d, Second  ** *     **   **  ** **       ****
* *  * *        *  *** * ** **    //Print  ** , Second     

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}

void    **** *   a[], int n, int ** ** int    **** **
{
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*   ****** * **  * **       ******** ** **   *****    *  **  ** *  *   * = a[i];
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 **  * *     *  ****  **  ** **  * *  *** ***  ** **  *  *
 ***  ***  * ****** * ***   * *  
}

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
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* ***** *  *  *  ** * * ***      **     ** ***  **    **  ** *  *** ** **   %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  *       ****
{
* ***  * *  * *** 
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     * ** *    {
  **** * * *   * *     *    *  ***** * * *    numbers were  *** * **** 
  * *    **  * * }
*  ****     *** * else if (n==1){
 ***  *****   ** *       * **   
  *****     *** *   *  ** *       * **         * **
    * * * *  *  * * *   * *  ** * *    ** * one number was entered. Largest: **** **** * *   **
*   ***   ** *   }
 * **     ***  * else{
 **** *  * *   **  ****       *  int i,  **** * ** ** ** **
*********  **  **** *   **  *** *    *      
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**  *   *  * * * ***** *  **  ** for (i=0;    *     i++)
 ***   ** ***    ***     **** ** {
     *    ***  *   *          *  *** * *   ** ***    **     
* *    ****   *****   ** *** *   *   *** ** **  ** **  *  ** **   *
*   *  *** **    * *        **   *   * * * }
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  ****   * **     ** *  **  **  * for (i=0;  ***    i++){
******  *  ***  **   *** **  ***  **    ***    *** *    ****    **       ** ** * ***  **  ********     **   *
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**  *** * **    **** *      *      **  *    **  * ***  * *
* **  **** *** ** ****    *  *    *  * **   *** ** **    **  * 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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