this is a simple vector code

simpleVectors.cpp

#include <memory>
#include <vector>
class Test {
      public:
    Test() { std::clog << "created" << std::endl; }
    ~Test() { std::clog << "destroid " << std::endl; }
    int value = 56;
};
int main()
{

    std::clog << "simple : " << std::endl;
    std::vector<Test> smpleVector;

    Test st1;
    smpleVector.push_back(st1);

    Test st2;
    smpleVector.push_back(st2);

    Test st3;
    smpleVector.push_back(st3);

    Test st4;
    smpleVector.push_back(st4);

    return 0;
}