The toughest one listed in this forum? Or overall toughest. I think the toughest language to pick up listed in this forum is probably Perl, compared to C++/C and Java. Java has a steeper learning curve in which it forces you to really understand OOP in the beginning, which C++ does not. As you programs get more complicated, because C++ gives you more control over low level operations than Java does, C++ programs can get messier than Java.
The only thing I don't like about Perl is its syntax, especially when you do shortcuts. That's probably because I come from a C++/Java/Windows world, and not used to all the little cryptic syntax from Perl/Unix/Linux.
Overall though, I think the hardest language to program in is Assembly Language. That is a language that you have to use a reference book to program with. You can't program without it.
Well, device drivers can be programmed in C++ now. But under the hood, at one time, it had to be created in assembly language. Assembly language is the closest to actual machine language (0's and 1's), so usually the programs that were written in it run fast because there's not much overhead as C++ or even worse, something like QBASIC. Programs are usuall small too. I wrote a small executable (.COM) program that rebooted the computer... 2 byte program. Yes, 2 bytes, not kilobytes, but bytes. That's the smallest you can get.
Here's a typical Assembly program written for the Turbo Assembler compiler. It prints out "Yo, I be da master of ebonics!"
; A program that displays line of text.
DISPLAY DB 13,10,'Yo, I be da master of ebonics!$'
MOV DX,OFFSET DISPLAY
INT 16h MOV
Assembly Language was popular in the Demo Scene - a community of programmers/hackers that made graphical special effects through assembly. It usually promoted their coding team or some other event. This was more popular in the late 80's and early nineties. Now I don't think it's as popular... around here anyways.
If you would like to see some examples of what these "Demos" are like, check out the link from my site:
why am i going 2 ask this question? i know the answer! so why am i still compelled to ask? curiousity? yes! fascination? yes! real of possiblities?.... i know assembler is a pc based language, although i dont know if its strickly CISC/486x based, or possibly RISC compatible as well - my question (drumroll plz) is cant i run it/demos on my Mac? no, of course not! had 2 ask, just incase the obvious isnt quite so in this particular instance... :-\