advantages of regular grammar

What are the benefits of context free grammar?
Context-Free Grammar(CFG) is useful to describe the nested chain structure or syntactic structure, such as balanced parenthesis, if-else, etc., and these can't be defined by Regular Expression.
Furthermore, CFG is more powerful than Regular Grammar as it allows a broader set of rules than Regular Grammar.
What are the uses of regular grammar?
The purpose of a regular grammar is to specify how to form grammatically correct strings in the language the grammar represents.
All strings in Σ^* that can be produced from the start symbol by application of the rules of the grammar are in the language of this grammar, all other strings are not.
Generally it reduces the linguistic task of constructing a grammar to the much simpler task of deciding for a given context whether to shift input or to rewrite the top elements of the stack as a new constituent.

How regular expressions are advantageous than regular grammar?

There is proper procedure for lexical and syntactical analysis in case of Regular Expressions.
There is no specific guideline for lexical and syntactic analysis in case of Context free grammar.
Regular Expressions are most useful for describing the structure of lexical construct such as identifiers, constant etc._{1 mai 2019}

Advantages of Regular Grammar:

Lexical rules are quite simple in Regular Grammar.
Notations in Regular Grammar are easy to understand.
It is easy to construct efficient recognizer from Regular Expressions.
There is proper procedure for lexical and syntactical analysis for Regular Grammar.

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