address-adt.c:

struct address
{
    char street[50];
    char city[50];
    char province[50];
    char postal_code[8];
};

struct address *new_address()
{
    struct address *temp = malloc(sizeof(struct address));
   
    temp->street[0] = '\0';
    temp->city[0] = '\0';
    temp->province[0] = '\0';
    temp->postal_code[0] = '\0';
   
    return temp;
}

int main(int argc, char **argv)
{
    if (argc < 5)
    {
        printf("Usage: %s street city province postal_code\n", argv[0]);
        exit(1);
    }

    struct address *my_address = new_address();

    strcpy(my_address->street, argv[1]);
    strcpy(my_address->city, argv[2]);
    strcpy(my_address->province, argv[3]);
    strcpy(my_address->postal_code, argv[4]);
   
    printf("Address is:\n\t%s\n\t%s, %s\n\t%s\n",
        my_address->street,
        my_address->city,
        my_address->province,
        my_address->postal_code);
}