That was over 38 years ago in 1983.
Today he is 54, and has starred in 123 movies in total, 120 since The Outsiders was released.
In The Outsiders, I think C. Thomas Howell looks:
The Outsiders scores 6.9 out of 10 on The Movie Database.
C. Thomas Howell's first acting role was as 'Tyler' in E.T. the Extra-Terrestrial, released in 1982 when he was 15.