C++ vectors of classes with constructors

Question

//Using g++ and ubuntu.
#include 
using namespace std;

Define a class:

class foo(){
(...)
foo(int arg1, double arg2);         


        

Answer 1

std::vector always create elements based on the default constructor which you haven't define in snippet above.

the push_back method is facing a double free issue because you did not handle the copy constructor.