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

Question

10.2k 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 | 10.2k 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)
*** *      * * * ******* ** *** *  **** *     ***  * * *   *****  *     ****   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 ) {
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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];
 * **   * ** * ***    ***    *  * n integers separated by spaces
*  *    ****   ** ** *** *  (int i = 0; i < n; i++)
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 *  ***   ** *  ** * ** * *    *   * * n, &largest, &second_largest);

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    ********  * * *   * *  ***    ****** ** *** *** *  * *** **  * numbers were entered.");
 ** * * ** ********  * ** * **   *** *   *  * *        No numbers were entered.
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 * **  ** * * ** **    * ** *     *      ***  *  ****         * * *** one number was entered. Largest: %d",largest);
* * * * ***  *** *  * **   * **  *  *  * **   ******** * ** Only one number was entered. Largest: 
****   * *** *  ** *    *   * *
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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!
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int    **
{
**** **** ** * * * int n, ****  * **   **
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* **  *  *  **   int * * 
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*     **    * for (int i = 0; i   ** n; i++)
*          *      * *  **** *   *  * *   * **  **    

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

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

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* * ** * *** 
{
  *  **  *     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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