// $G $F.go && $L $F.$A && ./$A.out // Copyright 2009 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package main // brainfuck var p, pc int var a [30000]byte const prog = "++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.!" func scan(dir int) { for nest := dir; dir*nest > 0; pc += dir { switch prog[pc+dir] { case ']': nest-- case '[': nest++ } } } func main() { for { switch prog[pc] { case '>': p++ case '<': p-- case '+': a[p]++ case '-': a[p]-- case '.': print(string(a[p])) case '[': if a[p] == 0 { scan(1) } case ']': if a[p] != 0 { scan(-1) } default: return } pc++ } }