C++ is Object Oriented Programming Language, here are some important topics we covers in       our study classes.
What are important topics in C language? - Quora
  1. C++ Introduction
  2. C++ Basics
  • Features
  • Installation
  • cout, cin, end
  • Variable
  • Data types
  • Keywords
  • Operators
  • Identifiers
  • Expression
3. Control statement
  • If-else and it's type
  • Switch
  • Loop
  1. Entry control
  2. Exit control
  • Break statement
  • Continue statement
  • Goto statement
  • Comment statement
4. Function
  • Call by values and call by reference
  • Recursion
  • Storage classes
5. Array
  • Simple array
  • Multidimensional array
6. Pointer basic
  • Pointers
  • Refrences
  • Memory management
7. Object and Class
  • Object oriented programme introduction and benifites and concept
  • Object class
  • Constructor
  • Destructor
  • Static
  • Structure
  • Enumeration
  • Friend function
  • Math function
8. Inheritance
9. Polymorphism
10. Abstraction
11. Namespace
12. Strings
13. Exception
  • Exception handling
  • Try/catch
  • User defined
14. Templates
15. Signal handling
16. File and Stream
  • File and stream
  • getline()
17. int to string
18. STL (Standard Template Library)
  • STL components
  • Vector
  • Deque
  • List
  • Set
  • Stack
  • Queue
  • Priority queue
  • Map
  • Multimap
  • Betset
  • Algorithm
  • And many more
19. Iterators and it's concept
20. After above can go through to C++11 and C++17.