3-lucky.c

#include<stdio.h>
int lucky()
{
    int year = 0;
    int month = 0;
    int day = 0;

    int sum = 0;
    int mod = 0;

    printf("Lucky Star\n");
    printf("==========\n");

    for (int i = 0; i < 5; i++) //i++ -> i = i+1;
    {
        printf("Please enter birthday dd-mm-yyyy : ");
        scanf_s("%d-%d-%d", &day, &month, &year);

        sum = year + month + day;
        mod = sum % 3;
        if (mod == 0)
        {
            printf("You are not LUCKY\n");
        }
        if (mod == 1)
        {
            printf("You are NORMAL\n");
        }
        if (mod == 2)
        {
            printf("You are  LUCKY\n");
        }
    }


    return 0;
}