C data - 1000.0f

hi I would like to know what does the f means in both 1000.0f and 2000.f ? anyone can kindly advise?

 ScalingFactor = 1000.0f/32768.0f;
 ScalingFactor = 2000.0f/32768.0f;

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Guru

It means it is treated as a float constant

Like "ul" would be an unsigned long

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