QUESTION

Program to find the largest two numbers from n elements in an array and then calculate and display their average.

“TESTCASE_1”: “5\n2 5 6 4 7\n###—###SEPERATOR—###—\n6.5”, “TESTCASE_2”: “7\n2 5 6 4 7 10 4\n###—###SEPERATOR—###—\n8.5”, “TESTCASE_3”: “4\n50 4 10 2\n###—###SEPERATOR—###—\n30”, “TESTCASE_4”: “2\n10 20\n###—###SEPERATOR—###—\n15”, “TESTCASE_5”: “0\n###—###SEPERATOR—###—\n0

ANSWER

#include <stdio.h>
int main()
{
int n;
  scanf("%d",&n);
  int arr[n];
  int i,j;
  for(i=0;i<n;i++)
    scanf("%d",&arr[i]);
  for(i=0;i<n;i++)
  {
    for(j=i+1;j<n;j++)
    {
    if(arr[i]>arr[j])
       {
         int temp=arr[i];
      arr[i]=arr[j];
      arr[j]=temp;
    }
    }
  }
  float sum=arr[n-1]+arr[n-2];
  printf("%.1f",sum/2);
	return 0;
}
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