Birthday age calculation

#include <stdio.h>
#include <time.h>

// A function to calculate the current date
void get_current_date(int *current_day, int *current_month, int *current_year)
{
    // Get the current time
    time_t t = time(NULL);
    // Convert it to a structure that contains date and time information
    struct tm tm = *localtime(&t);
    // Assign the values to the pointers
    *current_day = tm.tm_mday;
    *current_month = tm.tm_mon + 1;
    *current_year = tm.tm_year + 1900;
}

// A function to calculate the age of a person by using their birth date
int calculate_age(int birth_day, int birth_month, int birth_year)
{
    // Declare variables to store the current date
    int current_day, current_month, current_year;
    // Call the function to get the current date
    get_current_date(&current_day, &current_month, &current_year);
    // Declare a variable to store the age
    int age = current_year - birth_year;
    // Adjust the age if the person has not had their birthday yet this year
    if (birth_month > current_month || (birth_month == current_month && birth_day > current_day))
    {
        age--;
    }
    // Return the age
    return age;
}

// The main function of the program
int main()
{
    // Declare variables to store the name and birth date of the person
    char name[50];
    int birth_day, birth_month, birth_year;
    // Prompt the user to enter their name and birth date
    printf("Enter your name: ");
    scanf("%s", name);
    printf("Enter your birth date (dd/mm/yyyy): ");
    scanf("%d/%d/%d", &birth_day, &birth_month, &birth_year);
    // Call the function to calculate the age of the person
    int age = calculate_age(birth_day, birth_month, birth_year);
    // Display the name and age of the person
    printf("Hello %s, you are %d years old.\n", name, age);
    // Return 0 to indicate successful execution
    return 0;
}