If you want to compile the output then surely you're going to need all of the lines, not just the ones tbat started off ending with numbers.

If that's the case I think what you want is:
find . -name "*.c" -exec perl -ne 's/\d+$//; print' {} \;
which strips any numbers from the end of the lines and prints them all.

In reply to Re: regular expression by pileswasp
in thread Matching lines in a file that end in numbers (was: regular expression) by ashok

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