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#### Sqrt

Declaration:
  Function Sqrt (X : Real) : Real;
Description:
  Sqrt returns the square root of its argument X, which must be positive.
Errors:
  If X is negative, then a run-time error is generated.
See also:
  Sqr (577), Ln (528), Exp (493)

Listing: refex/ex66.pp

Program Example66;
{ Program to demonstrate the Sqrt function. }
begin
Writeln (Sqrt(4):0:3); { Prints 2.000 }
Writeln (Sqrt(2):0:3); { Prints 1.414 }
end.

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