double float

[zero hl]

how much number can double and float hold?

[TheIdeasMan]

http://www.cplusplus.com/reference/limits/numeric_limits/

Hi

Look at the example at the end, you can change the type where it has int.

The amount of significant figures these types can have is important.

float has 5 or 6 sf, while double has 15 or 16, so that is why it is the default and preferred type. Unless you are using some library which requires float, use double.