gistfile1.txt

 james@rorschach  ~  emcc test.c
test.c:16:53: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion]
    Person person = {.name = "James Newton", .age = 21, .colors = {.eyes = "brown", .hair = "brown"}};
                                                    ^~
test.c:18:79: warning: format specifies type 'int' but the argument has type 'char *' [-Wformat]
    printf("Name: %s, Age: %i, Eye color: %s, Hair color: %s\n", person.name, person.age, person.colors.eyes, person.colors.hair);
                           ~~                                                 ^~~~~~~~~~
                           %s
2 warnings generated.
 james@rorschach  ~  node a.out.js
Name: James Newton, Age: 21, Eye color: brown, Hair color: brown

 james@rorschach  ~ 