return

[Tom Backton]

Does return instantly end the execution of the function at that spot and return to the "outer" function which executed the "inner" one?

int Function()
{
    int a=0;
    return a;
    a=1;
}

Will a ever become 1 in this case or that line will NEVER be executed?

Another question: can return; be used like this, without an operand (or whatever its called), in functions with void return type?

[Warnis]

Will a ever become 1 in this case or that line will NEVER be executed?

Another question: can return; be used like this, without an operand (or whatever its called), in functions with void return type?

Yes, and yes.
But wouldn't testing it on your own be faster than waiting for a reply?

[jsmith]

Any decent compiler with warnings turned on should give a warning such as

"foo.cpp(5): warning: statement will never be executed".