Just now, I downloaded the standard of programming language C, and its title is 'ISO/IEC 9899:TC2'. I feel confused about this. I know 'ISO/IEO 9899' is for 'programming language C', but I don't know what does 'TC2' mean, and what is the relationship between 'ISO/IEC 9899:1999' and 'ISO/IEC 9899:TC2'?
who can help me? Thanks a lot!