Full formTechnology
BNFstands forBackus-Naur Form
Full Form of BNF
What is BNF?
Backus-Naur Form (BNF) is a formal notation used to describe the syntax of context-free grammars, commonly applied in computer science to define the structure of programming languages, communication protocols, and data formats. It was developed by John Backus and Peter Naur in the 1950s and 1960s for the specification of the ALGOL 60 language. In India, BNF is a key topic in undergraduate computer science and engineering curricula, especially in courses on compiler design, formal languages, and automata theory. It is used in academic settings, research labs, and software development to precisely specify grammar rules without ambiguity. BNF employs a set of production rules with nonterminals, terminals, and alternation/concatenation symbols. For competitive exams like GATE (Computer Science), BNF-based questions often test understanding of parse trees, derivation, and grammar classification. Its role extends to modern programming language design, documentation, and tools like parser generators (YACC, ANTLR). BNF remains a fundamental concept for students and professionals working on language processing, syntax analysis, and formal verification.
BNF का फुल फॉर्म
बैकस-नॉर फॉर्म
Example
In the GATE exam, a question asked to convert an English statement into BNF grammar rules for a simple arithmetic expression.
BNF — frequently asked questions
What is the full form of BNF?
BNF stands for Backus-Naur Form, a formal notation used to describe the syntax of context-free grammars in computer science.
How is BNF used in compiler design?
BNF is used to define the grammar rules for lexical and syntactic analysis, enabling the compiler to parse and understand the structure of source code.
Is BNF asked in GATE Computer Science?
Yes, GATE CS often includes questions on BNF, focusing on parsing, derivation, and grammar equivalence.