C syntax (simplified) BNF

Program ::= [ ]

Directives ::= [ ] ::= | |… ::=#include > ::=#define

Functions ::= [ ] ::= ::= ::=

Functions ::= ([ ]) ::= [, ] ::= |

Statements ::= [ ] ::= ; | ::= |return |break |continue |goto

Statements ::= { [declarations][ ] }

Declarations ::= [ ] ::= ; | ; ::= [= ]>[, ] ::= = [ ] ::= [ ] [[ ]…][={,…}]

Data types ::= [unsigned] [short|long] int | char | float | double

Identifiers ::= [ ] ::=_|A|B|…|z = [ ] = |

Expressions ::= | |& |…

Expressions |( ) | | | | ::= ? :

Arithmetic expressions ::= | ::=+|- ::=+|-|*|/|%

Relational Expression ::= ::= | =|==|!= ::= ! | && | ||

Assignments ::= ::= | [ ]… ::= =|+=|-=|*=|/=|%=

Increment/Decrement ::= | ::=++ ::= | ::=--

Decision Statements ::= | ::= if ( ) [else ]

Switch statement ::= switch ( ) { case : … [default: statements] }

Loop statements ::= while ( ) |do while (expression) |for ( ; ; )

Function calls ::= ::= ([ ]) :: = [, ]

Constants ::= | ::=[-]digits[.digits] ::= [ ] ::=0|1|…|9 ::=“ ” ::= ::=A|B|…|z|0|…|9|(|)|!| |.|*|…