c - Machine level memory theory -


i have question homework, , love if give me answer, more importantly if explain me in details happening @ machine level.

choose platform want , describe happens @ machine level in execution of code below when func() called.

what changes if foo inlined? 

int foo( int a, int* b) {     return + *b; }  extern int x;  void func() {     int y = 7;     int r;     r = foo( x, &y );     printf("%d\n", r); }

assuming no optimization occurring, basic difference between function call , inline call there no functional scope added. function call, function scope pushed on program stack , used accommodate local variables function, etc. upon return, stuff popped off stack.

with inline function, code pasted current routine, nothing pushed on stack. 1 can see simple routines, can beneficial. inline routine sort of (conceptually) halfway between function , macro in c parlance.


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