Is it a good practice to group all the variables of same type together while declaring in local scope within a function? If yes, why? Does it solve memory alignment issues?
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Is it a good practice to group all the variables of same type together while declaring in local scope within a function? If yes, why? Does it solve memory alignment issues?
I think it mattered with the VAX C compiler I used 20 years ago, but not with any modern compiler. It is not safe to assume that local variables will be in any particular order, certainly not safe to assume they will be in the order you declared them. I have definitely seen the MSVC compiler reorder them.
Grouping variables of the same type does help when they are fields of a struct, because the ordering of fields of a struct is guaranteed to match the order of declaration.