Array in beta

Hello pma
1) each element takes 4 bytes, correct?
2) does array concept enforce compiler to store these 10 elements in 10 contiguous physical addresses?
Sham

In 'C', each element will take up sizeof(char) bytes and as far as the program knows, they will be contiguous.  Virtual to physical translation is done invisibly outside of the C program.  It would be unusual for an array or 10 or 20 bytes to cross a physical address boundary.

Hello
My query is, can we infer   that these 10 elements are stored in contiguous physical addresses?
Sham

Hello
I mean do does compiler say something to mmu that array elements should be stored in 10 contiguous physical addresses ?
Sham

No, compilers and the programs don't normally talk to the hardware at all.  The program requests memory from the operating system under OS's like Windows and Linux or Unix.  The operating system handles all the details of memory management.  The memory will appear to the program like the elements are in contiguous addresses.

Hello
It means arrays are not allocated contiguously in physical memory then why text books say array is allocated contiguously
What is the advantage of using array if array is not allocated contiguously in physical memory?
Sham

Sham

The textbook is a simple description of what happens.  And it is good enough if you are just starting in programming.  To you as a programmer, it will always appear to be allocated contiguously and that's all you need to know at this point.  You have many other things to learn about before you get to the real differences between virtual and physical memory.  In fact most programmers never ever need to know about it.

Hello
ya am going computer architecture classes now,
But atleast I need to know,  are we really having the advantage of using arrays If it is really not allocating memory contiguously in physical ram.
What so special about arrays if it is not allocating contiguously in physical ram?
Sham

Perfect