Update lex.l

mehdiben7 · Jul 1, 2014 · 7b5a410 · 7b5a410
1 parent 0ff017f
commit 7b5a410
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ch03/3.5/src/lex.l b/ch03/3.5/src/lex.l
@@ -12,7 +12,7 @@ letter  [A-Za-z]
 digit   [0-9]
 
 /* Exercise 3.5.1 - c) */
-id      {letter}_*({letter}_*|{digit}_*)*
+id      {letter}({letter}|{digit}|_)*
 
 number  {digit}+(\.{digit}+)?(E[+-]?{digit }+)?
 doubleq \"