This is in accordance with the ANSI C standard. The linker is case insensitive , it sees everything in lowercase. To the linker, ABC, abc, and Abc refer to the same identifier abc.
Read moreWhy is case sensitive important?
Case sensitivity is important because it affects the way the language interprets the symbols used . The uniqueness of ‘a’ versus ‘A’ is supported by the language. In other words, it matches the internal representation.
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