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

Question

13.2k 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 | 13.2k 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)
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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)
{
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 *** ****** *   **  ***  ****  *  i;
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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)
{
    
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***   * ** ***** ***** *  ****  a[n];
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*   *    *     *****      (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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**** *  **  *   * **  * ****  *  *  0;
}

void find_two_largest(int a[], int n, int *largest, int *second_largest)
{
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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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*  * *         for (int i = 0; i    * n; i++)
***  * * ** ** **  *   *    * ** *   * *** ***  **   *  * 

 * *   **  *** *  *  *   n,     * *  **    ****  *  *  ***

  * ** * *  *   if (n == 0)
**  * *     **  **  * ***   ***** * *   ** * * * were ** ***** ** *
  ** *   ** **  else if (n == 1)
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   * *       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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* *** **  *  **   ** = **

***** *  **  ****  **   ***  = * ***
}

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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* ***  *     **  *  * **** * *    ***  * *   *  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;
 *** * **   ** * ***  ** *
* * ***  **** **   ** * ****  ***

**   * **   * * *  *****  **** 
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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 **    **    * 
{
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   *   *    ** if (n==0)
  * * *     * *  {
** *** ** * **       ***  * * *** * ****   * *  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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**  *         *      *** *  **    * *    *   * %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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