C with classes

ObjectOrientedProgramming/virtualclasstest/a.cpp

@@ -0,0 +1,5 @@
+#include "a.h"
+
+void A::p(){
+    std::cout << num + plus << std::endl;
+}

ObjectOrientedProgramming/virtualclasstest/a.h

@@ -0,0 +1,23 @@
+#ifndef A_H
+#define A_H
+#include <iostream>
+
+class A{
+private:
+    int num;
+    int plus;
+public:
+    A() = delete;
+    A(int n = 10, int m = 5) : num(n),plus(m){}
+    int retNum(){
+        return num;
+    }
+    int retPlus(){
+        return plus;
+    }
+    virtual void p();
+    virtual ~A(){}
+
+};
+
+#endif

ObjectOrientedProgramming/virtualclasstest/b.cpp

@@ -0,0 +1,13 @@
+#include "b.h"
+#include <iostream>
+
+void B::p()
+{
+    int sm = this->retNum() + this->retPlus() + js;
+    std::cout << sm << std::endl;
+}
+
+std::ostream& operator<<(std::ostream& os, B& x){
+    os << x.js << " ";
+    return os;
+}

ObjectOrientedProgramming/virtualclasstest/b.h

@@ -0,0 +1,19 @@
+#ifndef B_H
+#define B_H
+
+#include <iostream>
+#include "a.h"
+class B : virtual public A{
+private:
+    A* base;
+    int js;
+public:
+    B() = delete;
+    B(int n = 1) :  A(12,6), base(this), js(n){}
+    void p() override ;
+    friend std::ostream& operator<<(std::ostream& os , B& x);
+    ~B(){}
+};
+
+
+#endif

ObjectOrientedProgramming/virtualclasstest/c.h

@@ -0,0 +1,8 @@
+#pragma once
+
+class v{
+private:
+    int vn;
+public:
+    virtual void blast() = 0;
+};

ObjectOrientedProgramming/virtualclasstest/main.cpp

@@ -0,0 +1,16 @@
+#include <iostream>
+#include "a.h"
+#include "b.h"
+#include "c.h"
+
+int main(){
+    v a();
+    A a1(1,2), a2(2,3);
+    B b1(3), b2(5);
+    a1.p();
+    a2.p();
+    b1.p();
+    b2.p();
+    system("pause");
+    return 0;
+}