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Editorial Team
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Asked: 2026-05-26T00:00:44+00:00

Is it possible to create an object of a class, inside a class definition,

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Is it possible to create an object of a class, inside a class definition, without using default constructor?

class Vector3D {
public:
Vector3D(int x, int y, int z);
virtual ~Vector3D();

private:
int m_X;
int m_y;
int m_z;
};

class CustomClass {
private:
Vector3D m_Vec(50,50,50); //error
};
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1 Answer

  1. Editorial Team

    Yes, this can be done, but the syntax is different:

    class Vector3D {
public:
Vector3D(int x, int y, int z);
virtual ~Vector3D();

private:
int m_X;
int m_y;
int m_z;
};

class CustomClass {
private:
Vector3D m_Vec;

public:
CustomClass(): m_Vec(50,50,50) {}
};
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