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Memory layout of variables not in order of declaration

Using uVision 5.12.0.0 (ARM)
I need my variables to be placed in the order I declare them.
But when I look at the map-file they are not.
The types I use are unsigned) char, (unsigned) int, and arrays of these types.

Question 1: How are variables placed in memory?
Question 2: How can I control the order, there is no #pragma ORDER (as was in C166)?
Question 3: Any alternatives, besides placing them in a structure?

Thanks.

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