Nested Functions - Using the GNU Compiler Collection (GCC)

5.4 Nested Functions A nested function is a function defined inside another function. (Nested functions are not supported for GNU C++.) The nested function's name is local to the block where it is defined. For example, here we define a nested function named square, and call it twice: foo (double a, double b) { double square (double z) { return z * z; } return square (a) + square (b); } The nested

[mooz]

nested function は lexical-scope を持つ. trampoline という技術を使って実現.