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asked in Compiler Design by Active (1.6k points)   | 46 views

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from the given SDT we conclude some rules

i)' *'  is least priority and left associative.

ii)'-' is 2nd highest priority and left associative

iii) '/' is highest priority and right associative.

1)    8/4*2-6*4

=2*2-6*4 (8/4=2)

=2*-4*4 (2-6=-4)

=-2*4 (2*-4=-2  addition property for *)

a1=2

2) 6*2/1-2*3

=6*2-2*3

=6*0*3

=6*3

a2=9.

so a1-a2=2-9=-7

answered by Veteran (10.7k points)  
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