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

Question

17.8k 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 | 17.8k 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.
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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 ) {
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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;
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**       ***  * **    *** ***     a[n];
***    *  *    * *  **     *****     n integers separated by spaces
***** ****   **        *  (int i = 0; i < n; i++)
*****    ** ** **     *****    *** **** * ** ***  **  ******* * %d", &a[i]);

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

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 ** * * ** * **    * ** *  *  ** *  **** ***  * ** *      No numbers were entered.
**    *  *  *  ***    ***  **   if (n == 1)
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* * * *   **  *   ** *  ****** ** *** *** * * *   ***** *  *  Largest: , Second Largest:

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

void find_two_largest(int a[], int n, int *largest, int *second_largest)
{
 * *  ** *****  **  *  *  * *   * fir,sec;
* *******   *       ***** *   * i;
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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!
** **      *** * * ****

 **    * *    *** * a[], int n, int    * ** int *****  *  

int  *  **
{
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*   **  **    int   
 ***      *  *******  ** *  **    * n *  *   *   * by  **
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*** **     ****   *  **   ******   ***    *    ** *     **   *

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 * * * *   *  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++)
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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++){
*  **  *  ***     * * **    **** * **** * *   **   ** ** *   **    *       
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*   *     ***  ***    ** *  *****   ** * * *   ******      *  *   * * ******* * *   * = a[i];
 **    ******  * *** ***  * * ** * * * ******   *    else if (a[i] ****** *  ** ***
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   * * * **  *** * **  **      **** *       * * ***  ** *     ***    * *****   * ****** ** = 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;
**  *    ***  **  *** *   ** 
 ** *  ***  *      * ***  *  * **

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

}

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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