Purpose of #define-ing symbol as itself in C
126958
What is the point of saying "#define FOO FOO" in C?
62079
Are dollar-signs allowed in identifiers in C++03?
143690
What is the purpose of XORing a register with itself?
83409
Difference between $ and # in Linux environment
19993
C preprocessor # and ## operators
96838
Is the behaviour of .* to include . and .. defined in LSB or POSIX or some other specification?
83866
Confusion with Associativity of Assignment operator in C
38162
What's the use/meaning of the @ character in variable names in C#?
24110
Constructing symbol definitions for With
97840
What is the point of using a named function expression?
41471
What is the meaning of lines starting with a hash sign and number like '# 1 "a.c"' in the gcc preprocessor output?
44265
What's the scope of the "using" declaration in C++?
18928
Logic behind sizeof() for character constants and function names
149928
define() vs. const
149655
Use of #pragma in C
110724
Why is #include  not required to use printf()?
128490
What is the C++ equivalent of the C# @ symbol prefixing strings?