RosettaCodeData/Task/Monte-Carlo-methods/True-BASIC/monte-carlo-methods.basic

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FUNCTION getpi(throws)
LET incircle = 0
FOR i = 1 to throws
!a square with a side of length 2 centered at 0 has
!x and y range of -1 to 1
LET randx = (rnd*2)-1 !range -1 to 1
LET randy = (rnd*2)-1 !range -1 to 1
!distance from (0,0) = sqrt((x-0)^2+(y-0)^2)
LET dist = sqr(randx^2+randy^2)
IF dist < 1 then !circle with diameter of 2 has radius of 1
LET incircle = incircle+1
END IF
NEXT i
LET getpi = 4*incircle/throws
END FUNCTION
CLEAR
PRINT getpi(10000)
PRINT getpi(100000)
PRINT getpi(1000000)
PRINT getpi(10000000)
END