#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define SIZE 10 // Size of the array

// Function to update date and time format
void updateDateTimeFormat(char *dateTime) {
    // Your implementation to update date and time format goes here
    // This function can be implemented according to your specific requirements
    // For demonstration purposes, let's just print the updated format
    printf("| %-15s", dateTime); // Print the updated date and time format
}

// Function to calculate standard deviation
double calculateStandardDeviation(int data[], int size) {
    double mean = 0.0, variance = 0.0, stddev = 0.0;

    // Calculate mean
    for (int i = 0; i < size; i++) {
        mean += data[i];
    }
    mean /= size;

    // Calculate variance
    for (int i = 0; i < size; i++) {
        variance += pow(data[i] - mean, 2);
    }
    variance /= size;

    // Calculate standard deviation
    stddev = sqrt(variance);

    return stddev;
}

// Function to calculate cumulative frequency
void calculateCumulativeFrequency(int data[], int size, int cumulative[]) {
    cumulative[0] = data[0];
    for (int i = 1; i < size; i++) {
        cumulative[i] = cumulative[i - 1] + data[i];
    }
}

// Function to sort an array in ascending order using bubble sort
void sortArray(int arr[], int size) {
    for (int i = 0; i < size - 1; i++) {
        for (int j = 0; j < size - i - 1; j++) {
            if (arr[j] > arr[j + 1]) {
                // Swap elements
                int temp = arr[j];
                arr[j] = arr[j + 1];
                arr[j + 1] = temp;
            }
        }
    }
}

int main() {
    int array[SIZE] = {10, 20, 30, 40, 50, 60, 70, 80, 90, 100}; // Predefined array

    // Sort the array
    sortArray(array, SIZE);

    // Update date and time format
    char dateTimeFormat[] = "DD/MM/YYYY HH:MM:SS";
    printf("| %-15s", "Date"); // Print the header for the date
    updateDateTimeFormat(dateTimeFormat);
    printf("\n");

    // Calculate standard deviation
    double stddev = calculateStandardDeviation(array, SIZE);
    printf("| %-15s%.2lf\n", "Std Deviation:", stddev);

    // Calculate variance
    double variance = pow(stddev, 2);
    printf("| %-15s%.2lf\n", "Variance:", variance);

    // Calculate frequency
    int frequency[SIZE];
    for (int i = 0; i < SIZE; i++) {
        frequency[i] = array[i];
    }

    // Calculate cumulative frequency
    int cumulativeFrequency[SIZE];
    calculateCumulativeFrequency(frequency, SIZE, cumulativeFrequency);

    // Print the cumulative frequency
    printf("| %-15s", "Cumulative Freq:");
    for (int i = 0; i < SIZE; i++) {
        printf("%d ", cumulativeFrequency[i]);
    }
    printf("\n");

    return 0;
}