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

Question

18.6k 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 | 18.6k 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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}

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

int  **   * 
{
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*  **     **   *    * ***  * **   ** **  *      **   **** 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 =   

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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++){
* ***  ******   * **  * * ***  *     *  **      *  ***   ** *  * *   *    *  *   *
  * **  * *  *  *  ***   *    ******  *** *  * ***  *       *        *  *  *   ***** ** = *  **
*  * * ****  ***** *   *** **  * ***      *  ** ** **** * *** ***  ***  **   = 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* **  *  * ** 
{
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**** * ** * ** ** *** * *****   
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  * **   **   *  *** ** **   * * **  **   ***  **      **    = a[i];
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* ***    *** }
***  * * * ** * *  *  ** ** =  ****   
}


int *  **
{
*  * **  *  * *** int n,   * * * ***   *** 
  * **  * *   *** * *** ***     *     **  ** * * *    * *  * * *** ** will be entered
*   * *******  int a[n];
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*  ** *    ***      * *  ** n, **  *  *  * * ****  * * ** * *

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* * **  ***  **** else if (n == 1)
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**    *    *** else
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* ** *  **   **   *   **  ** }

 ** *      ***  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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** *    *   * }
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  **   *  *   * }
***  ** *   * * else{
**  * *  **    ** **     ** int i,  * *** * *** *    
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* ***  *       **  }
}

void * * ****  * a[], int n, int *largest, int  **  **    * 

int  *    ** 
{


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