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Strings in c.

  1. Aug 23, 2009 #1
    This is what a book says.

    Is this string different from a text stream which consists of many lines?...or can a string contain many lines separated by \n?
     
  2. jcsd
  3. Aug 23, 2009 #2

    CompuChip

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    Sure,
    "Hello world.\nMy name is dE_logics.\nI love PF, it is the best forum.\n\nEver."
    is just as valid a string as
    "Hello\n"
    or
    "It's me!"
     
  4. Aug 23, 2009 #3
    c-strings are stored as arrays of characters, and a character is typically 8 bits which can store an integer from 0-255. The letters, numbers, and symbols all have a mapping to numerical values but that only uses up about 46 of the 256 available numbers.

    By using a backslash you can conveniently encode some other special characters. For example,

    \0 = null-terminator, maps to number 0
    \n = line ending
    \r = carriage return (goes back to overwrite the current line with following text)
    \\ = puts a single slash in

    So for example, if you make:

    char *str = "my\0name";

    then print out "str", it will just print out "my" because it assumes the first null-terminator is the end of the string.
     
  5. Aug 23, 2009 #4
    Ok, thanks everyone!
     
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