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Chapter 3 Functions |
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sqrt
EXPR
sqrt
This function returns the square root of
EXPR
. If
EXPR
is omitted, it returns the square root of
$_
. For other roots such as cube roots, you can use the
**
operator to raise something to a fractional power.[
8
]
[8] Don't try either of these approaches with negative numbers, as that poses a slightly more complex problem.
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| 3.2.156 sprintf |
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3.2.158 srand |