t_9_011.cpp

来自「C++的一个好库。。。现在很流行」· C++ 代码 · 共 20 行

/*=============================================================================
    Boost.Wave: A Standard compliant C++ preprocessor library
    http://www.boost.org/

    Copyright (c) 2001-2005 Hartmut Kaiser. Distributed under the Boost
    Software License, Version 1.0. (See accompanying file
    LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/

// Test, if additional whitespace is inserted at appropriate places.

//O --variadics

#define PRIMITIVE_CAT(a, b)     a ## b
#define PRIMITIVE_CAT3(a, b, c) a ## b ## c

//R #line 18 "t_9_011.cpp"
PRIMITIVE_CAT(1, ABC)         //R 1 ABC 
PRIMITIVE_CAT3(ABC, 1, ABC)   //R ABC1ABC