Implement code changes to enhance functionality and improve performance

Author: Sumit tripathi

virtualFunction.cpp

@@ -0,0 +1,48 @@
+#include<iostream>
+#include<cstring>
+using namespace std;
+class S7T{
+protected:
+    string title[30];
+    float rating;
+public: 
+    S7T(char *s, float r){
+        strcpy(title, s);
+        rating = r;
+    }
+    virtual void display(){}
+};
+class S7Tbrand : public S7T{
+    float videoLength;
+public: 
+    S7Tbrand(char *s, float r, int vl) : S7T(s,r){
+        videoLength = vl;
+    }
+    void display(){
+        cout << "This is an very nice video with title " << title << endl;
+        cout << "Rating: " << rating << " Out of 5 star" << endl;
+        cout << "The length of this video is: " << videoLength << " minutes" << endl;
+    }
+};
+class S7Tcomp : public S7T{
+    int words;
+public:
+    S7Tcomp(char *s, float r, int w) : S7T(s, r){
+        words = w;
+    }
+    void display(){
+        cout << "This is an very nice video with title " << title << endl;
+        cout << "Rating: " << rating << " Out of 5 star" << endl;
+        cout << "No. of words in this tutorial is: " << words << " words" << endl;
+    }
+};
+int main(){
+    string *title = new char[20];
+    float rating, vlen;
+    int words;
+    title = "react tutorial by S7T";
+    vlen = 5.70;
+    rating 4.8;
+    S7Tbrand rjsVideo(title, rating, vlen);
+    return 0;
+}