Homework #1 for Compiler 2003
Due date: March 20, 2:10pm


1. Do Textbook page 148, Problem 3.10.

2. Write a Lex program that copies a file, replaces
each nonnull sequence of white space by a single blank,
replaces each English word with the word reversed, and
removes any leading white space starting a line.
A white space is a tab or a blank.
An English word is a string of upper and lower case letters plus "'".
The input file comes from standard input.
The output prints to standard output.

Example:
Input:<     I don't have  51 letters.>
Output:<I t'nod evah 51 srettel.>

NOTE: "<" and ">" are not part of the input and output.

Submit it to TA's email address:

助教: 余家興
台大資訊工程研究所碩一
電機新館531 數位語音處理實驗室
Email: comp03@csie.ntu.edu.tw

Your file name for Lex program must be

idnumber.l

where idnumber is your 學號