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A numeric constant stands for a number. This number can be an integer, a decimal fraction, or a number in scientific (exponential) notation.(20) Here are some examples of numeric constants that all have the same value:
105 1.05e+2 1050e-1
A string constant consists of a sequence of characters enclosed in double-quotation marks. For example:
represents the string whose contents are `parrot'. Strings in
gawk can be of any length, and they can contain any of the possible
eight-bit ASCII characters including ASCII NUL (character code zero).
implementations may have difficulty with some character codes.
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