Private Access

#include <iostream>
using namespace std;

class Sensor {
   int value;
   public:
   void setValue(int x)
   {
      value = x;
   }
   int getValue()
   {
      return value;
   }
   
};

int main() {
   Sensor s;
   s.setValue(75);
   cout << "Sensor value: " << s.getValue();
   return 0;
}