Use of double keyword in c++?

Question

https://www.sololearn.com/discuss/651693/?ref=app

Answer 1

To store floating-point values at double precision.

Answer 2

Knowing the difference between single and double precision is so important when it comes to comparing these two fundamental types. In general, a double has 15 decimal digits of precision, while float has 7.

See:[https://stackoverflow.com/questions/2386772/difference-between-float-and-double]