How to allocate memory fo array of objects - c++

Question

I am trying to create an array of objects in C++. As C++ Supports native objects like int, float, and creating their array is not a problem.
But when I create a class and create an array of objects of that class, it's not working.
Here is my code:
#include <iostream>
#include <string.h>
using namespace std;
class Employee
{
string name;
int age;
int salary;
public:
Employee(int agex, string namex, int salaryx)
{
name = namex;
age = agex;
salary = salaryx;
}
int getSalary()
{
return salary;
}
int getAge()
{
return age;
}
string getName()
{
return name;
}
};
int main(void)
{
Employee **mycompany = {};
//Create a new Object
mycompany[0] = new Employee(10, "Mayukh", 1000);
string name = mycompany[0]->getName();
cout << name << "\n";
return 0;
}
There is no compilation error, but when I'm running the Program, it is crashing. I don't know exactly what is happening here.
Please Help.
Here are some more details:
OS: 64bit Windows 8.1 on Intel x64 (i3) Architecture of Compiler: MinGW64 G++ Compiler

Answer 1

The advice here, as always, is to use some STL container, like an std::vector.
That said you're probably going to need a default Employee constructor (unless you always initialize all the elements of the container with the constructor you already have, which is unlikely what you'll do, if you are to manually allocate memory, but more likely if you use a std::vector).
//...
Employee() = default; // or Employee(){}
Employee(int agex, string namex, int salaryx)
{
name = namex;
age = agex;
salary = salaryx;
}
//...
If you really, absolutely, must do it by manual memory allocation, it would look roughly like this:
// Employee array with 5 employees, with the first two initialized with your constructor
Employee *mycompany = new Employee[5] {{10, "Mayukh1", 1000}, {20, "Mayukh2", 2000}};
//adding an employee
mycompany[2] = {30, "Mayukh3", 3000};
// it still has space for 2 more
Don't forget to delete the memory afterwards:
delete [] mycompany;
Live demo

Answer 2

this is how you would do that:
#include <iostream>
#include <string.h>
using namespace std;
class Employee
{
string name;
int age;
int salary;
public:
Employee(int agex, string namex, int salaryx)
{
name = namex;
age = agex;
salary = salaryx;
}
int getSalary()
{
return salary;
}
int getAge()
{
return age;
}
string getName()
{
return name;
}
};
int main(void)
{
//Create an Array length of 10
// in c++ its static you have to give the length of the array while declaring
Employee mycompany [10];
//Create a new Object
mycompany[0] = new Employee(10, "Mayukh", 1000);
string name = mycompany[0]->getName();
cout << name << "\n";
return 0;
}