Why pow(10,5) = 9,999 in C++

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Due to the representation of floating point values pow(10.0, 5) could be 9999.9999999 or something like this. When you assign that to an integer that got truncated.

EDIT: In case of cout << pow(10.0, 5); it looks like the output is rounded, but I don’t have any supporting document right now confirming that.

EDIT 2: The comment made by BoBTFish and this question confirms that when pow(10.0, 5) is used directly in cout that is getting rounded.

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