mirror of
https://github.com/QB64Official/qb64.git
synced 2024-09-28 11:17:47 +00:00
103 lines
No EOL
2.4 KiB
QBasic
103 lines
No EOL
2.4 KiB
QBasic
'Program (c) T.A.Giles - Mar 2001
|
|
'Right Angle Triangle Solver v 1.1
|
|
'640 x 480 graphics resolution
|
|
SCREEN 12
|
|
start:
|
|
CLS
|
|
'degrees - radians conversion ratios
|
|
LET dr = .0174532925199#
|
|
LET rd = 57.2957795131#
|
|
LOCATE 1, 34
|
|
COLOR 7
|
|
PRINT "Right Angle Triangle Solver v 1.1 (c) T.A.Giles"
|
|
'Draw Triangle
|
|
LINE (50, 400)-(400, 400), 2 'Side A
|
|
LINE (400, 400)-(400, 150), 2 'Side B
|
|
LINE (400, 150)-(50, 400), 2 'Side C
|
|
LINE (360, 400)-(360, 360), 2 'Vert box
|
|
LINE (360, 360)-(400, 360), 2 'Hori box
|
|
'Print Side and Angle labels
|
|
COLOR 3
|
|
LOCATE 27, 27
|
|
PRINT "Side A"
|
|
LOCATE 18, 53
|
|
PRINT "Side B"
|
|
LOCATE 16, 23
|
|
PRINT "Side C"
|
|
LOCATE 24, 15
|
|
COLOR 14
|
|
PRINT "Angle b"
|
|
LOCATE 14, 43
|
|
PRINT "Angle a"
|
|
COLOR 15
|
|
lab0:
|
|
'Re-set print position for output
|
|
LOCATE 1, 1
|
|
LET f = 0' Binary flag
|
|
'Input data routine
|
|
PRINT "Enter '0' if unknown"
|
|
INPUT "Side A "; a
|
|
INPUT "Side B "; b
|
|
INPUT "Side C "; c
|
|
INPUT "Angle a (deg)"; x
|
|
INPUT "Angle b (deg)"; y
|
|
'Error trapping routine
|
|
IF a < 0 OR b < 0 OR c < 0 OR x < 0 OR y < 0 THEN GOTO err1
|
|
IF x >= 90 OR y >= 90 OR x + y > 90 THEN GOTO err1
|
|
IF a >= c AND c > 0 OR b >= c AND c > 0 THEN GOTO err1
|
|
IF a > 0 AND b > 0 AND c > 0 AND NOT c = SQR(a ^ 2 + b ^ 2) THEN GOTO err1
|
|
IF NOT x = 0 THEN LET y = 90 - x
|
|
'Degrees to Radians conversion
|
|
LET x = x * dr
|
|
LET y = y * dr
|
|
'Binary flag routine
|
|
IF a = 0 THEN LET f = f + 1
|
|
IF b = 0 THEN LET f = f + 2
|
|
IF c = 0 THEN LET f = f + 4
|
|
IF y = 0 THEN LET f = f + 8
|
|
IF f = 1 OR f = 3 THEN GOTO lab1
|
|
IF f = 2 OR f = 6 THEN GOTO lab2
|
|
IF f = 4 OR f = 5 THEN GOTO lab3
|
|
IF f = 8 OR f = 9 THEN GOTO lab4
|
|
IF f = 10 THEN GOTO lab5
|
|
IF f = 12 THEN GOTO lab6
|
|
err1:
|
|
SOUND 750, 1
|
|
GOTO lab0
|
|
lab1:
|
|
LET a = c * COS(y)
|
|
LET b = c * SIN(y)
|
|
LET c = a / COS(y)
|
|
GOTO lab9
|
|
lab2:
|
|
LET b = a * TAN(y)
|
|
LET c = a / COS(y)
|
|
GOTO lab9
|
|
lab3:
|
|
LET a = b / TAN(y)
|
|
LET c = a / COS(y)
|
|
GOTO lab9
|
|
lab4:
|
|
LET a = SQR(c ^ 2 - b ^ 2)
|
|
LET y = ATN(b / a)
|
|
GOTO lab9
|
|
lab5:
|
|
LET b = SQR(c ^ 2 - a ^ 2)
|
|
LET y = ATN(b / a)
|
|
GOTO lab9
|
|
lab6:
|
|
LET y = ATN(b / a)
|
|
LET c = a / COS(y)
|
|
lab9:
|
|
'Output routine
|
|
LOCATE 1, 1
|
|
PRINT " ........ SOLUTION ........"
|
|
PRINT " Side A = "; a
|
|
PRINT " Side B = "; b
|
|
PRINT " Side C = "; c
|
|
PRINT " Angle a (deg) = "; 90 - y * rd
|
|
PRINT " Angle b (deg) = "; y * rd
|
|
PRINT " Area of Triangle = "; (a * b) / 2
|
|
LOCATE 29, 1
|
|
INPUT "Ctrl+Break > EXIT : Enter > MORE"; x
|
|
GOTO start |