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Why the 'f' in de value of a float?
May 20, 2010 at 7:27pm
Hi there Forum,
Today I started working with SFML ( http://www.sfml-dev.org/ ) for a little school project I'm doing. I was reading the graphics tutorials when I came across some (for me) unknown float value's. I noticed them before but never paid them any attention, not needing them.
In the tutorial they used arguments like '200.f' and '1,5f'. I always define my variables just using a decimal value.
What are these f's for and when should I use them?
Thanks in advance!
Yuri
Today I started working with SFML ( http://www.sfml-dev.org/ ) for a little school project I'm doing. I was reading the graphics tutorials when I came across some (for me) unknown float value's. I noticed them before but never paid them any attention, not needing them.
In the tutorial they used arguments like '200.f' and '1,5f'. I always define my variables just using a decimal value.
What are these f's for and when should I use them?
Thanks in advance!
Yuri
Last edited on May 20, 2010 at 7:27pm
May 20, 2010 at 7:39pm
f tells the compiler that a value is float. if there is no f, a value like 2.5 is considered as double. there is generally nothing wrong with not writing the f, as far as I know.
May 20, 2010 at 7:47pm
I guess your program's memory footprint would be smaller if you specified floats where you really didn't need doubles but the advantage would be trivial for most apps.
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