w3resource

C Exercises: Find the second largest element in an array

C Array: Exercise-16 with Solution

Write a program in C to find the second largest element in an array.

Pictorial Presentation:

C Exercises: Find the second largest element in an array

Sample Solution:

C Code:

#include <stdio.h>

void main(){
  int arr1[50],n,i,j=0,lrg,lrg2nd;
  
       printf("\n\nFind the second largest element in an array :\n");
       printf("-------------------------------------------------\n");  
  
       printf("Input the size of array : ");
       scanf("%d", &n);
    /* Stored values into the array*/
       printf("Input %d elements in the array :\n",n);
       for(i=0;i<n;i++)
            {
	      printf("element - %d : ",i);
	      scanf("%d",&arr1[i]);
	    }
/* find location of the largest element in the array */		
//   lrg=arr1[0];
   lrg=0;
  for(i=0;i<n;i++)
  {
      if(lrg<arr1[i])
	  {
           lrg=arr1[i];
           j = i;
      }
  }

/* ignore the largest element and find the 2nd largest element in the array */		
   lrg2nd=0;
  for(i=0;i<n;i++)
  {
     if(i==j)
        {
          i++;  /* ignoring the largest element */
		  i--;
        }
      else
        {
          if(lrg2nd<arr1[i])
	     {
               lrg2nd=arr1[i];
             }
        }
  }

  printf("The Second largest element in the array is :  %d \n\n", lrg2nd);
}

Sample Output:

Find the second largest element in an array :                                                                 
-------------------------------------------------                                                             
Input the size of array : 5                                                                                   
Input 5 elements in the array :                                                                               
element - 0 : 2                                                                                               
element - 1 : 9                                                                                               
element - 2 : 1                                                                                               
element - 3 : 4                                                                                               
element - 4 : 6                                                                                               
The Second largest element in the array is : 6   

Flowchart:

Flowchart: Find the second largest element in an array.

C Programming Code Editor:

Improve this sample solution and post your code through Disqus.

Previous: Write a program in C to delete an element at desired position from an array.
Next: Write a program in C to find the second smallest element in an array.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.

C Programming: Tips of the Day

C Programming - What is the argument for printf that formats a long?

Put an l (lowercased letter L) directly before the specifier.

unsigned long n;
long m;

printf("%lu %ld", n, m);

Ref : https://bit.ly/3dIwfkP