UGC NET CSE | June 2006 | Part 2 | Question: 24

Question

If the post fix form of a string is $ABC+-D$*, The actual string is:

• A. $(A-(B+C))$*$D$
• B. $((A-B)+C)$*$D$
• C. $((A+B)-C)$*$D$
• D. $(A+(B-C)$*$D)$

Answer 1

post fix expression of $(A-(B+C))*D=ABC+-D*$

post fix expression of $((A-B)+C)*D=AB-C+D*$

post fix expression of $((A+B)-C)*D=AB+C-D*$

post fix expression of $(A+(B-C)*D)=ABC-D*+$

So option A is the answer