If the following C++ code is valid, show the output. If it is invalid, explain why. (3, 4) q = current; current = current->link; current->link = temp->link; trail = current->link; current =...

If the following C++ code is valid, show the output. If it is invalid, explain why. (3, 4)

q = current;

current = current->link;

current->link = temp->link;

trail = current->link;

current = trail->link;

cout <>info <><>info

<><>info

If the following C++ code is valid, show the output. If it is invalid, explain why. (3, 4)

trail = temp->link; //Line 1

temp = temp->link->link; //Line 2

current = temp; //Line 3

current = current->link; //Line 4

trail->link = last->link; //Line 5

cout <>info <>

<>info <>