v h "int" h " " h "fib" h "(" h h "int" h " " "n" ")" v "{" v h " " v h "if" h " " h "(" h h "n" h "<" "2" ")" v h " " h "return" h " " h "n" ";" v "else" h " " h "return" h " " h h h "fib" h "(" h h "n" h "-" "1" ")" h "+" h "fib" h "(" h h "n" h "-" "2" ")" ";" "}"