mean

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

#define MAX_DATA_SIZE 100 // Maximum number of data points

int main() {
    int data[MAX_DATA_SIZE]; // Array to store input data
    int n; // Number of data points
    double sum = 0.0; // Variable to store the sum of data points
    double mean; // Variable to store the mean

    // Prompt user for the number of data points
    printf("Enter the number of data points (up to %d): ", MAX_DATA_SIZE);
    // Input validation loop to ensure a valid number of data points
    while (1) {
        if (scanf("%d", &n) != 1) { // Check if input is not a valid integer
            printf("Invalid input. Please enter a valid number.\n");
            while (getchar() != '\n'); // Clear input buffer
        } else if (n <= 0) { // Check if input is not a positive integer
            printf("Invalid input. Please enter a positive number.\n");
        } else if (n > MAX_DATA_SIZE) { // Check if input exceeds maximum data size
            printf("Invalid input. Maximum number of data points exceeded.\n");
        } else {
            break; // Break out of loop if input is valid
        }
        printf("Enter the number of data points (up to %d): ", MAX_DATA_SIZE);
    }

    // Prompt user to enter the data points
    printf("Enter the data points:\n");
    for (int i = 0; i < n; i++) {
        // Input validation loop to ensure valid data points
        while (1) {
            printf("Data %d: ", i + 1);
            if (scanf("%d", &data[i]) != 1) { // Check if input is not a valid integer
                printf("Invalid input. Please enter a valid number.\n");
                while (getchar() != '\n'); // Clear input buffer
            } else if (data[i] < 0) { // Check if input is a negative number
                printf("Invalid input. Please enter a non-negative number.\n");
            } else {
                sum += data[i]; // Add data point to sum
                break; // Break out of loop if input is valid
            }
        }
    }

    // Calculate mean
    mean = sum / n;

    // Display the mean
    printf("Mean of the data points: %.2lf\n", mean);

    return 0; // Return success
}