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This video tutorial explains how to define methods outside the class definition in c++.
You will learn how to use scope resolution operator to define methods of a class, how to access the properties using scope resolution operator in detail with example.

source code for this tutorial

#include <iostream>
#include <string>

using namespace std;

class Human{
public:
    string name = "noname" ;
    void introduce();

};

void Human :: introduce(){

    cout << Human ::name <<endl;

}

int main()
{
    Human anil;

    anil.introduce();
    return 0;
}