I love your videos, thank you! I'm a bit confused about something in this video though. At around 7:46 you say that 3.6 is stored as a double but it's being truncated to a float. Isn't 3.6 a float? I guess I don't understand why, if 3.6 is within the range of float and f has been defined as a floating-point data type variable, the value 3.6 wouldn't be stored as float?
Literals are stored in memory as doubles by C++. That's 8 bytes. A float variable is 4 bytes. So if you assign 3.6 to a float variable, 4 bytes get cut off. Now, in this case, who cares because 3.6 doesn't require all 8 bytes to store correctly. However, if you stored something like a bunch of digits for PI, then you might lose some of those decimal places when you lose the 4 bytes.
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