--- putc(ch)

    ʸ ch  $> [Ȥ߹ѿ] ˽Ϥޤ
    ch ʤ 0  255 ϰϤбʸ
    ޤch ʸʤ顢ƬʸϤޤ

    ch ֤ޤ

        putc("ch")
        putc(?c)
        putc(99)
        # => ccc

