Eval expr

A LL Mathematical Parser written in C.

How to use

make
./eval-expr "3 + 42 * (1 - 2 / (3 + 4) - 1 % 21) + 1"

BNF grammar

S         ::= op_low
op_low    ::= op_high[['+'|'-']op_high]*
op_high   ::= path[['*'|'/'|'%']path]*
path      ::= '('S')'|number
number    ::= ['0'|'1'|'2'|'3'|'4'|'5'|'6'|'7'|'8'|'9']+

License

The MIT License (MIT) - see LICENSE for more details