Overloading Macro on Number of Arguments

I have two macros FOO2 and FOO3: #define FOO2(x,y) ... #define FOO3(x,y,z) ... I want to define a new macro FOO as follows: #define FOO(x,y) FOO2(x,y) #define FOO(x,y,z) FOO3(x,y,z) But this doesn't work because macros do not overload on number of arguments. Without modifying FOO2 and FOO3, is there some way to define a macro FOO (using __VA_ARGS__ or otherwise) to get the same effect of dispatchi

[oxon]

C のマクロを引数の数に応じてオーバーロードする方法。動いた。便利。

[takkunn1611]

Overloading Macro on Number of Arguments

[VoQn]

C言語マクロの引数オーバーロードテクニック。なるほどそんな技が…

[momontyo]

面白いな、今度試してみよう。

[kasumani]

Overloading Macro on Number of Arguments I was just researching this myself, and I came across this here. The author added default argument support for C functions via macros. I'll try to briefly summarize the article. Basically, you need to define a macro that can count arguments. Tags: feedly, ift

[t10471]

頭いいなー

[wasabiz]

頭良すぎる/C言語でマクロをオーバーロードする