I get this message when compiling my program. It's about 25KB big, and MC have 32KB... What should I do to compile bigger programs anway, because program is not completed yet, I have to add some more stuff.
"How long is your longest expression (in characters) ?"
Number of characters is not directly relevant.
More important is things like number of operators, function calls, brackets...
Note that "nesting" also applies to brackets (parentheses) - the following expression contains (redundant) nested parentheses:
x = ( (a) + (b) )
Not directly ... however, it is easier to cram a complex expression into 500 characters than into 72.