how to read arithmetic data from text file and handle operations in perl

Question

I have a text(example.txt) file which has numbers and arithmetic operations e.g.
10+5*6
8+(4*3)
...
I want to handle these operations and generate output like below in another text file (output.txt)
10 + 5 * 6 = 40
8 + (4 * 3) = 20
...
I'm new to perl, so your help would be appreciated.

score 3 · Answer 1 · answered Dec 26 '13 at 10:01

3

perl -MSafe -lnE 'say "$_ = ", Safe->new()->reval($_) //"failed"' example.txt

perldoc Safe - Compile and execute code in restricted compartments

answered Dec 26 '13 at 10:01

mpapec

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score 0 · Answer 2 · answered Dec 26 '13 at 08:34

0

This ignores any security concerns

perl -ln -e '$a=eval; print "$_ = $a";' < examples.txt

answered Dec 26 '13 at 08:34

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how to read arithmetic data from text file and handle operations in perl

2 Answers2