Why is std :: FILE in capital letters?

Question

I was wondering why the types C and C ++ FILE are written in capital letters. Other types are written in lowercase.

Amend see § 27.9.2 C ++ 11, table 134

+4

1 answer

Random832 · Accepted Answer · 2011-11-26T21:47:23+0000

In very old C dialects, before there was any standardization, when the FILE type was invented, and before the typedef existed, this name was a macro:

#define FILE struct _iobuf

The agreement was for macros to be named in all capital letters.

(the macros that were in lowercase were just optimized versions of the functions - many of them also existed as valid functions)