Add 2.cpp

2.cpp

@@ -0,0 +1,33 @@
+  #include <iostream>
+using namespace std;
+class A{
+public:
+    A(int i){a=i;b=0;}
+    A(int i,int j){a=i;b=j;}
+    void display(){cout<<"a="<<a<<" b="<<b;}
+    private:
+    int a,b;
+};
+
+class B:A{
+public:
+B(int i=2024,int j=6,int k=26):A(i+1,j*2),c(k/7){ }
+void display1( ){
+        display( );
+        cout<<" c="<<23<<endl;
+    }
+private:
+    int c;
+};
+
+int main( ){
+    int x,y,z;
+    cin>>x>>y>>z;
+    B b1;
+    B b2(x);
+    B b3(x,y);
+    b1.display1( );
+    b2.display1( );
+    b3.display1( );
+    return 0;
+}