The BASIC feature of the C language standard permits the use of familiar line numbering:

[lcamtuf@infosec.exchange]

The BASIC feature of the C language standard permits the use of familiar line numbering:

Compiler Explorer - C (x86-64 gcc (trunk))

typedef int BASIC[]; int main() { if ((BASIC) { [20] puts("cruel"), [30] puts("world"), [10] puts("hello"), }); }

(godbolt.org)

You can use an if () statement to see if the feature is supported by your compiler.

https://media.infosec.exchange/infosec.exchange/media_attachments/files/113/677/428/354/821/624/original/be668637990245ad.png

[nothacking@infosec.exchange]

@lcamtuf Here's a version that works with every C compiler I could find: https://godbolt.org/z/anKvKqxoa

I haven't found one that initializes arrays out of order yet.