/****************************************************************************** Online C++ Compiler. Code, Compile, Run and Debug C++ program online. Write your code in this editor and press "Run" button to compile and execute it. *******************************************************************************/ #include <iostream> using namespace std; struct LinkedlistNode{ LinkedlistNode *next; int val; }; int main() { LinkedlistNode *n1 = new LinkedlistNode(); n1->val = 3; LinkedlistNode *n2 = new LinkedlistNode(); n2->val = 5; n1->next = n2; LinkedlistNode *n3...