Draw a dfsa for identifiers that contain only letters


Rewrite the productions for each of the following nonterminals as right regular grammars: Identifier, Float. 
2. Draw a DFSA for identifiers that contain only letters and digits, where the identifier must have at least one letter, but it need not be the first character. Hint: everything to the left of the leftmost letter must be a digit. 
3. Show the moves made using the DFSA for identifiers given in Section 3.2.2. in accepting the following: 
1. a 
2. a2 
3. a2i 
4. abc 
4. For C-style / * . . . * / comments, give 
1. a right regular grammar 
2. a regular expression 
3. a DFSA 
5. Can a language have no reserved words? That is, suppose every reserved word (such as if and for) were merely predefined identifier, which the programmer is free to redefine. Can such a language exist? Explain. 

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Basic Computer Science: Draw a dfsa for identifiers that contain only letters
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