1 Mean, Median & Mode Individual Series

#include<stdio.h>
int hsh[100000];

void Mean(int arr[], int n){
    long int sum =0;
    for(int i=0 ; i<n ; i++)
        sum+=arr[i];
    float ans = (float)sum/n;
    printf("Mean of given data is %.2f \n",ans);
}

void Median(int arr[], int n){
    for(int i=0 ; i<n-1 ; i++){
        for(int j = 0 ; j<n-i-1 ; j++){
            if(arr[j] > arr[j+1] ){
                int temp = arr[j];
                arr[j] = arr[j+1];
                arr[j+1] = temp;
            }
         }
     }
     printf("\n");

    float ans;
    if (n % 2 != 0) {
        ans = arr[n / 2]; // for odd number of ele.
    } else {
        int k = n / 2;
        ans = ((float)(arr[k] + arr[k - 1])) / 2; // for even number of ele.
    }

    printf("Median of given data is %f\n", ans);
}


void Mode(int arr[], int n){
    int i;
    for(i=0 ; i<n ; i++)
        hsh[arr[i]]++;

    int index = arr[0];

    for(i=1 ; i<n ; i++){
        if(hsh[arr[i]] > hsh[index])
            index = arr[i];
    }




    if(hsh[index] ==1)
        printf("Since every element in observation occuring once there will be no mode\n");
    else
        printf("Mode of given data is %d\n",index);
}

int main(){
    int n;
    printf("Enter the number of observation\n");
    scanf("%d",&n);
    int arr[n];
    printf("Now enter each element one by one \n");
    for(int i=0 ; i<n ; i++)
        scanf("%d",&arr[i]);


     // now calling function which will print the mean
    Mean(arr,n);

    // now callign function which will print the median of the given data
    Median(arr,n);

    // now calling function which will print the mode of given data
    Mode(arr,n);

    return 0;
}