Do Empty spaces/text slow down code?

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Running a for-loop with 5000 cycles is generally not slowed down by two empty spaces or three comments in the code. The execution methods are either compile and run, where code is converted to machine code for optimal speed (common in languages like C/C++ and Fortran), or interpretive, where each line is processed sequentially. In the latter case, if spaces are included within quotes for printing, there could be a slight slowdown, but overall, spaces and comments are disregarded during execution. Thus, they do not significantly impact performance as the code is transformed into a more efficient executable format.
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If you are say running a for-loop with 5000 cycles, will 2 empty spaces and say 3-comments slow this operation down?
 
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In general, no.

There are two methods of execution compile and run where code is converted to machine code and then run. This is the fastest option used for C/C++, Fortran...

The second method is interpretive where each line is tokenized and the tokens are processed and run:

http://en.wikipedia.org/wiki/Interpreter_(computing)

If your spaces were within quotes and were being printed each time then that would slow things down very very slightly. The more data you process the longer it takes a program to run.

However, in interpretive or compiled languages the spaces are removed from consideration as the code is converted to a more executable format.
 
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