PHONEBOOK

#include <stdio.h>
#include <stdlib.h>
typedef struct{
    int day,year,month;
}birth;

typedef struct{
    int building;
    char street[200];
}address;

typedef struct {
    char fn[50];
    char ln[50];
    birth dob;
    address add;
    char email[200];
    char phone[10];
}data;


typedef struct node{
    data data;
    struct node *leftPTR;
    struct node *rightPTR;
}node;

node* constructor()
{
    node *root=(node*)malloc(sizeof(node));
root->data.add.building=0;
root->data.add.street[0],'\0';
root->data.dob.day=0;
root->data.dob.month=0;
root->data.dob.year=0;
root->data.email[0]='\0';
root->data.fn[0]='\0';
root->data.ln[0]='\0';
root->data.phone[0]='\0';
root->leftPTR=NULL;
root->rightPTR=NULL;

return root;
}


int main()
{

    printf("Hello world!\n");
    return 0;
}