What is precisely a double?

Question

I think I didn't get what is a double in C. I searched the web and double appear to be like float, but stored in a bigger memory area. Is that correct, is that all and if it doesn't, what's it?

Answer 1

Yes that is correct. A double is like a float, only it's more precise in representing fractional number. A float has the size of 32 bits, or 4 bytes, and double has the size of 64 bits, or 8 bytes. Therefore, it's only natural if double is more precise than float. You can refer to https://en.m.wikipedia.org/wiki/Double-precision_floating-point_format for more info. If you're still new to something like this, you don't really need to worry about the difference between float and double

Answer 2

Oh okay thank you