Why is inlining considered faster than a function call?

Question

Now, I know it\'s because there\'s not the overhead of calling a function, but is the overhead of calling a function really that heavy (and worth the bloat of having it inli

Answer 1

let

int sum(const int &a,const int &b)
{
     return a + b;
}
int a = sum(b,c);

is equal to

int a = b + c

No jump - no overhead