why my output is not coming correctly if I give my inputs ?

Question

#include <stdio.h>

int main()
{
int n,sum=0;
double median;
printf("enter number of elements");
scanf("%d",&n);
int arr[100],freq[100];
printf("enter %d elements : \n",n);
for (int i=0;i<n;i++)
{
sum+=arr[i];
}
double mean = (double)sum;
if(n%2==0)
{
int mid1 = n/2;
int mid2 = mid1-1;
median=(arr[mid1]-arr[mid2])/2.0;
}
int max_count=0,mode=-1;
for(int i=0;i<n;i++)
{
freq[i]=1;
for (int j=0;j<n;j++)
{
if(arr[i]==arr[j])
{
freq[i]++;
}
}
if(freq [i]>max_count)
{
max_count = freq[i];
mode = arr[i];
}
}
printf("mean : %2lf \n",mean);
printf("median : %2lf \n",median);
printf("mode : %d \n",mode);
}

Answer 1

Mahaswetha Imayavaramban the calculation for mean is incomplete. Divide by number of elements.

The logic for median is incomplete. It is missing the case when number of elements is odd.