#include<iostream>
#include<vector>
#include<memory>
using namespace std;
/*                         CSC 7B/FC Quiz

1. Determine if there are memory errors in the following functions, describe
   the errors and their causes. BE SPECIFIC. Pinpoint the lines that cause
   the errors and describe the *type* of memory error.
*/

// a.
       void f() {
         char* a = new char[16];
         a[0] = 'x'; a[1] = 'y'; a[2] = 0; // "xy"
         a = new char[4];
         a[0] = '1'; a[1] = 0;
         delete a;
       }






// b.
       void g() {
         vector<int> v{1,2,3,4};
	 for(int x:v) v.push_back(x);
       }







// c.
       int* h() {
         int* a = new int[10];
         int *b = a;
         return a;
       }







// d.
       void h2() {
         unique_ptr<int> a = make_unique<int>(1);
         unique_ptr<int> b = make_unique<int>(2);
         b = move(a);
         cout << *a << " and " << *b << endl;
       }
                 






/*
2. Is it ever possible to have a memory leak if unique_ptr and make_unique
   are applied exclusively for heap-allocated memory? YES OR NO.
   


3.Given unique_ptr<int> a and unique_ptr<int> b, detail the three critical 
steps that occur during a "move assignment":
 
     b = move(a);













4. What is the *default* move semantics of C++ for integers.  That is,
   what happens with

     int x = 1;
     int y = move(x);
*/