The idea is “recursively defining the problem down to 2-bit values”: 00, 01, 10, 11. They’re not recursive macros, but does represent the technique of recursive decomposition of the problem. The arrangement of macros as a cascade attacks the problem of generating the table of 2^8 values by solving the problem for 2-bits (generating 4 … Read more
Because ‘<‘ is a binary operator and it cannot be evaluated without an operand on either side. You can verify this without macros simply by attempting to compile the following code: bool LessThan( int a, int b ) { return( a (<) b ); } At the very least you should see “expected an expression” … Read more
You misspelled defined: #if definied(_WIN32) || definied(_WIN64) || definied(__WIN32__) #elif definied(__linux) || definied(__linux__) || definied(linux) should be: #if defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) #elif defined(__linux) || defined(__linux__) || defined(linux) solved missing binary operator before token “(”
Why do you think a keyword is a preprocessor directive? They are two substantially different things. To make it clear, a preprocessor directive always starts with a hash and must occupy at least a whole line. A keyword is instead a “word” (may contain underscores). So they have no commonness. Your answers: Is the directive … Read more