Programming

newgrl101 · #1 05-02-2005, 12:41

What's "L" in the programs? It seems to be a numerical value but what is it equivalant to in metric system.

Thanks

jgannon · #2 05-02-2005, 12:45

Where is this "L" to which you refer?

Dave Scheck · #3 05-02-2005, 13:02

I found an example in robot.h of the kickoff navigation code

Code:

#define    PI_MRAD 3142L

From this site

Quote:

Long integer constants are created by appending the suffix "l" or "L" (upper- or lower-case alphabetic L) to a decimal integer. For example, 0L is the long zero. Either the upper or lower-case "L" may be used, but upper-case is the convention for readability.

Kevin Watson · #4 05-02-2005, 13:05

Quote:

Originally Posted by newgrl101

What's "L" in the programs? It seems to be a numerical value but what is it equivalant to in metric system.

Thanks

Do you mean something like 0L (zero ell)? It's just a way of telling the compiler how much precision to use in calculations that use this constant. In this case, it tells the compiler to use a 32-bit (L)ong.

-Kevin

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