adding inheritance example

lectures/26_inheritance/inheritance.cpp

@@ -0,0 +1,46 @@
+#include <iostream>
+
+class Parent
+{
+public:
+	Parent(){
+		std::cout << "Parent default constructor" << std::endl;
+	}
+	Parent(std::string name, int age) : name(name), age(age){
+		std::cout << "Parent other constructor" << std::endl;
+	}
+	void print(){
+		std::cout << "Parent: " << name << ":" << age << std::endl;
+	}
+protected:
+	std::string name;
+	int age;
+private:
+	int id;
+};
+
+// public inheritance
+class Child: public Parent
+{
+public:
+	Child(){
+		std::cout << "Child default constructor" << std::endl;
+	}
+	Child(std::string name, int age): Parent(name, age) {
+		std::cout << "Child other constructor" << std::endl;
+	}
+	void printChild(){
+		std::cout << "Child: " << name << ":" << age << std::endl;
+		// std::cout << "id:" << id << std::endl;
+	}
+protected:
+};
+
+int main(){
+	Parent parent("bob", 30);
+	parent.print();
+	Child child;
+	Child child2("james", 10);
+
+	return 0;
+}