grammer.txt

program -> functions-List
variable_declarations -> variable_declaration ; | variable_declaration , withoutType
withoutType -> identifier ; | identifier , withoutType ;  
variable_declaration -> type identifier 
stmts -> stmt stmts'
stmts' -> stmts | 
stmt -> assignment_stmt | return_stmt | ifelse_stmt | for_stmt | while_stmt | variable_declarations
while_stmt -> while ( expression ) { stmts } 
type -> int | double | char
relational_op -> <= | >= | < | == | >
logical_op -> &&
expression -> expression + term  | expression - term | term
term -> term * factor | term / factor | factor
factor -> ( expression ) | identifier | num | double_val 
return_stmt -> return identifier ; | return num ; | return double_val ; | return ;
for_stmt -> for ( expression ; expression ; expression ) { stmts }
ifelse_stmt -> if ( expression ) { stmts } | if ( expression ) { stmts } else { stmts }
assignment_stmt -> identifier = expression ; 
functions-List -> functions-List function | function
function -> void identifier ( paramList ) { stmts } | type identifier ( paramList ) { stmts }
paramList -> | type identifier | void