Step 1 of Code

////////////////////////////////////////////////////////

    //Sub-Structures

struct SubscriberName //Sub-Structure for subscriber_master
{
    string fname;
    string lname;
    int custID;
}

struct Address //Sub-Structure for subscriber_master
{
    string street;
    string city;
    string state;
    int zip_code;
}

struct Date //Date Sub-Structure for use in RenewalInformation structure
{
    string month;
    int day;
    int year;
}
struct RenewalInformation //Sub-Structure for subscriber_master
{
    int months_left;
    Date renew_notice;
}

/////////////////////////////////////////////////////////

    //Top-Level Structure

struct subscriber_master
{
    SubscriberName sub_name;
    Address address;
    RenewalInformation renewal_info;
}

/////////////////////////////////////////////////////////