# BlitzMax Docs -> 2D - A-Z -> R -> RndDouble

# RndDouble!()

### Returns:

A random double in the range 0 (inclusive) to 1 (exclusive)### Description:

Generate random double### Example:

' RndDouble.bmx ' Two players take turns shooting at a target. The first hit wins. ' Player 1 hits 30% of the time, player 2 hits 40%. ' What is the probability that player 1 wins? Function winner() ' play game once, return winner 1 or 2 Repeat If RndDouble() < 0.3 Then Return 1 If RndDouble() < 0.4 Then Return 2 Forever End Function Local count[3] trials = 1000000 For n = 1 to trials count[ winner() ] :+ 1 Next Print "Estimated probability = " + ( Double( count[1] ) / Double( trials ) ) Print Print " Exact probability = " + ( 15.0 / 29.0 ) Input ; End

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