test.c

#include <stdio.h>

typedef struct {
    char *eyes;
    char *hair;
} Colors;

typedef struct {
    char   *name;
    char   *age;
    Colors colors;
} Person;

int main(int argc, const char *argv[])
{
    Person person = {"James Newton", 21, {"brown", "brown"}};

    printf("Name: %s, Age: %i, Eye color: %s, Hair color: %s\n", person.name, person.age, person.colors.eyes, person.colors.hair);

    return 0;
}

test.rb

class Person
  attr_accessor :name, :age, :colors

  def initialize(name, age, eye_color, hair_color)
    self.name   = name
    self.age    = age
    self.colors = Colors.new(eye_color, hair_color)
  end
end

class Colors
  attr_accessor :eyes, :hair

  def initialize(eye_color, hair_color)
    self.eyes = eye_color
    self.hair = hair_color
  end
end

person = Person.new('James Newton', 21, 'brown', 'brown')
person.name        #=> "James Newton"
person.colors.hair #=> "brown"

people = []
people << Person.new('James Newton', 21, 'brown', 'brown')
# add more people, like Robert and Zach.

people.first.name #=> "James Newton"

test2.c

#include <stdio.h>

int main(int argc, const char *argv[])
{
    char *people[3] = {"James Newton", "Robert Babcock", "Zach Smith"};

    for (int i = 0; i < sizeof(people) / sizeof(people[0]); i++) {
      printf("Name: %s\n", people[i]);
    }

    return 0;
}

test3.c

#include <stdio.h>

typedef struct {
    char   *name;
    int    age;
} Person;

int main(int argc, const char *argv[])
{
    Person people[2] = {{"James Newton", 21}, {"Robert Babcock", 22}};

    for (int i = 0; i < sizeof(people) / sizeof(Person); i++) {
      printf("Name: %s, Age: %i\n", people[i].name, people[i].age);
    }

    return 0;
}