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

Question

10.1k 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 | 10.1k 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);

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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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** ** ******    *   ***    
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*  ** ** * * *  *  *  *  *  ** *** *  *  * **        *  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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    }
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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;
** *  *  *    **  * * *  ****** *** *  * * *****  &n); //Numbers will be entered
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****     *   ***** *  **   *  * n integers separated by spaces
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    * ** ** * *** ** *** *** **   *****           ***    *** *  *** %d", &a[i]);

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

* ** * ****** *  *   ** ** *       (n == 0)
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***      ***** *  *** * **  ***   *  * ****  ** *** ** 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)
{
****** **  ******** **     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!
**   * *  * ** *  ***

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

int *   **
{
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*    *     ***  int **   
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****** *  ***** 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++)
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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  * ** **  * 
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*  * *   * **   ***   *  * ** **  *****      *     %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] ** *  *    ****
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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;
***    *     * *** ***  **   
 *  **   ***   **  *** * * *   

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

}

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];
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*    *    ***** * {
* *  *** ** * *   *  * * ** ** if (a[i] > * *  *
** ***    **  *    * * *** ***  **  **
*  * *  *  *   * * **  *    **   * * **     _largest = a[i];
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**** **  *  *   }
* * ***   *  *     **   * =  * **  *
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** *** *      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++)
**  ****      ******** *
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**   ***  ***  ****   **



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***** * *       if (n == 0)
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* * **** *  ** ** *   ***    *  ** * **     * * * *** ***  * ** * *****    * 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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**** * *  *   ** **  **    *     *      ***  ** 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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**    * * *   * * * ***** * ****   ****  *  *  **       *   **   ****
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****     **      * ***  ***  }
*   *    ** **   *  *  *   *     * *
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****   **  **  ***    **   * *    * * * *****     * **  *  *   }
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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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