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I think C89 introduced 'trigraphs' for exactly that reason: so people using non-ASCII ISO646 systems could have symbols that at least vaguely resembled the ones

• dietrichepp 12y ago
  In Japan, they'll write C code with printf("Hello, world!¥n"); (This may be less common today.)
  • TazeTSchnitzel 12y ago
    It's not actually. For compatibility, Japanese fonts display \ as ¥.