Answers for "make class in c++"

c++ classes

class SampleClass
{
    int a;
public:
    SampleClass(int v)
    {
        a=v;
    }
    int RetVal()
    {
        return a;
    }
};

new class *

/*
 Keyword "this"
You can use keyword "this" to refer to this instance inside a class definition.

One of the main usage of keyword this is to resolve ambiguity between the names of 
data member and function parameter. For example:
*/
class Circle {
private:
   double radius;                 // Member variable called "radius"
   ......
public:
   void setRadius(double radius) { // Function's argument also called "radius"
      this->radius = radius;
         // "this.radius" refers to this instance's member variable
         // "radius" resolved to the function's argument.
   }
   ......
}

create class instance c++

MyClass* MyObject = new MyClass();