Answer / Pranaw Kumara

In C++, a constructor is a special function that's used to initialize objects. The constructor has the same name as its class and has no return type (except for the bool constructor). Here's an example:n```cppnclass Rectangle {n private:n int width;n int height;nn public:n Rectangle(int width, int height) : width(width), height(height) {}n // ... other methods and members heren};nnint main() {n Rectangle rect(5, 10); // Calling constructor to create a new objectn return 0;n}n```

Which command properly allocates memory a) char *a=new char[20]; b) char a=new char[20]; c) char a=new char(20.0);

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