publicaccessmodifer.cpp

// c++ oop public access modifier

#include <iostream>

using namespace std;

// defining a class
class Circle {
    public:                     // we defined that this class data members will be public
        double radius;
        double compute_area(){
            return 3.14*radius*radius;
        }
};                              // always put semicolons after defining a class

//main function
int main(){
    Circle ball;
    
    ball.radius = 3.5;            // accessed public data number outside Circle class
    
    cout << "Radius is: " << ball.radius << endl;
    cout << "Area is: " << ball.compute_area();
    
    return 0;
}