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

Question

12.4k 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 | 12.4k 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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}

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);

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** *** **** ** **   *  *   * * * ****  **  ******     *** **  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;
   * ********  * * **  **  **      ** i;
** * *  * ***  ** ** ****  *   ( n == 1 ) {
*  *   ** * ***  ***** * *   *     ** **** ** ****  * * ** = a[0] ;
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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++)
 * **     ****  *** * **   **    * **  ** *     * * * * * * 

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

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] * **   * *  *  
 **  *******    *      * *** ** * *  ** *  ***  ***** * *        *** ** ** *** *    * ** *** * 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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