>>10
Is that C99? I haven't really done C in years.

>>11
Oh yeah. Dunno what I was thinking:

[1]> (+ t t)

*** - +: T is not a number

Regardless, shut up. T is not a "type error", it's the result of a value not enclosed in a s-expression. Also, SICP isn't even CLisp, it's Scheme, and /prog/ is full of shitheads like you who think they're awesome because they halfassed their way through a beginner-level book. So how about you go away.