Recently in learning PE, written VS2019 console program

 
#include  
Int a, [100000]. 
Int b=0 x12345678; 
Int main () 
{
Int c; 
STD: : cout & lt; <"Hello World! \ n "; 
STD: : cout & lt; <"& amp; A="& lt; <& A. & lt; STD: : cout & lt; <"& amp; B="& lt; <& BSTD: : cin & gt;> c; 
} 

Can see there seems to be a debug program. Textbss so extents, and I can't find it under the release procedure is,
Later said the moment only for release version of the program
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Under this program, I saw, b is stored in. The data, while a [file]. The data, but in. Data VirtualSize internal
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I know that there is such a section. BSS is dedicated to the runtime for a such an uninitialized variable,
But I check the feast in the table are not so. BSS section, then the loader is how to load this file, about opening up this space? [even if said open up less space, also need a size file this size?]?
Another is that use od seen this program, found. Don't see the BSS section?

Thank you for your old buddies