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https://github.com/QB64-Phoenix-Edition/QB64pe.git
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103 lines
2.4 KiB
QBasic
103 lines
2.4 KiB
QBasic
'Program (c) T.A.Giles - Mar 2001
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'Right Angle Triangle Solver v 1.1
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'640 x 480 graphics resolution
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SCREEN 12
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start:
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CLS
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'degrees - radians conversion ratios
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LET dr = .0174532925199#
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LET rd = 57.2957795131#
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LOCATE 1, 34
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COLOR 7
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PRINT "Right Angle Triangle Solver v 1.1 (c) T.A.Giles"
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'Draw Triangle
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LINE (50, 400)-(400, 400), 2 'Side A
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LINE (400, 400)-(400, 150), 2 'Side B
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LINE (400, 150)-(50, 400), 2 'Side C
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LINE (360, 400)-(360, 360), 2 'Vert box
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LINE (360, 360)-(400, 360), 2 'Hori box
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'Print Side and Angle labels
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COLOR 3
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LOCATE 27, 27
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PRINT "Side A"
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LOCATE 18, 53
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PRINT "Side B"
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LOCATE 16, 23
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PRINT "Side C"
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LOCATE 24, 15
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COLOR 14
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PRINT "Angle b"
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LOCATE 14, 43
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PRINT "Angle a"
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COLOR 15
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lab0:
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'Re-set print position for output
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LOCATE 1, 1
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LET f = 0' Binary flag
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'Input data routine
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PRINT "Enter '0' if unknown"
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INPUT "Side A "; a
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INPUT "Side B "; b
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INPUT "Side C "; c
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INPUT "Angle a (deg)"; x
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INPUT "Angle b (deg)"; y
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'Error trapping routine
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IF a < 0 OR b < 0 OR c < 0 OR x < 0 OR y < 0 THEN GOTO err1
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IF x >= 90 OR y >= 90 OR x + y > 90 THEN GOTO err1
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IF a >= c AND c > 0 OR b >= c AND c > 0 THEN GOTO err1
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IF a > 0 AND b > 0 AND c > 0 AND NOT c = SQR(a ^ 2 + b ^ 2) THEN GOTO err1
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IF NOT x = 0 THEN LET y = 90 - x
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'Degrees to Radians conversion
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LET x = x * dr
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LET y = y * dr
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'Binary flag routine
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IF a = 0 THEN LET f = f + 1
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IF b = 0 THEN LET f = f + 2
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IF c = 0 THEN LET f = f + 4
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IF y = 0 THEN LET f = f + 8
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IF f = 1 OR f = 3 THEN GOTO lab1
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IF f = 2 OR f = 6 THEN GOTO lab2
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IF f = 4 OR f = 5 THEN GOTO lab3
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IF f = 8 OR f = 9 THEN GOTO lab4
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IF f = 10 THEN GOTO lab5
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IF f = 12 THEN GOTO lab6
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err1:
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SOUND 750, 1
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GOTO lab0
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lab1:
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LET a = c * COS(y)
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LET b = c * SIN(y)
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LET c = a / COS(y)
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GOTO lab9
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lab2:
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LET b = a * TAN(y)
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LET c = a / COS(y)
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GOTO lab9
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lab3:
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LET a = b / TAN(y)
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LET c = a / COS(y)
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GOTO lab9
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lab4:
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LET a = SQR(c ^ 2 - b ^ 2)
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LET y = ATN(b / a)
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GOTO lab9
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lab5:
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LET b = SQR(c ^ 2 - a ^ 2)
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LET y = ATN(b / a)
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GOTO lab9
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lab6:
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LET y = ATN(b / a)
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LET c = a / COS(y)
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lab9:
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'Output routine
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LOCATE 1, 1
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PRINT " ........ SOLUTION ........"
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PRINT " Side A = "; a
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PRINT " Side B = "; b
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PRINT " Side C = "; c
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PRINT " Angle a (deg) = "; 90 - y * rd
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PRINT " Angle b (deg) = "; y * rd
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PRINT " Area of Triangle = "; (a * b) / 2
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LOCATE 29, 1
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INPUT "Ctrl+Break > EXIT : Enter > MORE"; x
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GOTO start |