added class and object in c++

Add Code Here/C++/OOPS/Classandobj.cpp

@@ -0,0 +1,35 @@
+class and object
+
+class : A class is a user-defined data type that we can use in our program, and it works as an object constructor, or a "blueprint" for creating objects.
+
+object : An object is an instance of a class
+
+#include <bits/stdc++.h>
+using namespace std;
+class Student
+{
+    // there are 3 types of access modifiers they are private , public and protected
+    // data members are private by default
+    // we should specify it as public to access directly
+public:
+    string name;
+    int roll;
+    int classno;
+    void intro()
+    {
+        cout << name << " " << roll << " " << classno;
+    }
+};
+int main()
+{
+    Student s1;
+    s1.name = "sanu";
+    s1.classno = 12;
+    s1.roll = 28;
+    s1.intro();
+
+    //    cout<<s1.name;
+    //    cout<<s1.roll;
+    //    cout<<s1.classno;
+    return 0;
+}