RosettaCodeData/Task/Angle-difference-between-tw.../QBasic/angle-difference-between-tw...

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SUB getDifference (b1!, b2!)
r! = (b2 - b1) MOD 360!
IF r >= 180! THEN r = r - 360!
PRINT USING "#######.###### #######.###### #######.######"; b1; b2; r
END SUB
PRINT " Bearing 1 Bearing 2 Difference"
CALL getDifference(20!, 45!)
CALL getDifference(-45!, 45!)
CALL getDifference(-85!, 90!)
CALL getDifference(-95!, 90!)
CALL getDifference(-45!, 125!)
CALL getDifference(-45!, 145!)
CALL getDifference(-45!, 125!)
CALL getDifference(-45!, 145!)
CALL getDifference(29.4803, -88.6381)
CALL getDifference(-78.3251, -159.036)
CALL getDifference(-70099.74233810938#, 29840.67437876723#)
CALL getDifference(-165313.6666297357#, 33693.9894517456#)
CALL getDifference(1174.838051059846#, -154146.6649012476#)