error: 'struct passwd' has no member named 'pw_comment'

http://www.sics.se/man2html/getpwent.3v.html

 

getpwent(), getpwuid() and getpwnam() each return a pointer to an object with the following structure containing the fields of a line in the password file. Each line in the file contains a passwdstructure, declared in the <pwd.h> header file:

struct  passwd {
        char    *pw_name;
        char    *pw_passwd;
        uid_t   pw_uid;
        gid_t   pw_gid;
        int     pw_quota;
        char    *pw_comment;
        char    *pw_gecos;
        char    *pw_dir;
        char    *pw_shell;
};
struct
passwd *getpwent(), *getpwuid(), *getpwnam();