Online C++ course: from your first compiled program to pointers and classes

• Writing, compiling and running a program
• main(), #include and the std namespace
• Input and output with cin and cout
• Reading compiler errors and warnings

std::cout << "Hello, C++\n";

• int, double, char, bool and std::string
• Declaring and initialising variables; const and auto
• Integer division, overflow and type casting
• Operators and precedence

const double pi = 3.14159; int r = 5;

• if, else if, else and switch
• while, do-while and for loops
• Nested loops and printing patterns
• break and continue

for (int i = 1; i <= 10; ++i) std::cout << i * i << ' ';

• Declaring and defining functions
• Parameters, return values and function overloading
• Passing by value and by reference
• Recursion
• Splitting code into header and source files

int maxOf(int a, int b) { return a > b ? a : b; }

• Fixed-size arrays and looping over them
• Two-dimensional arrays (matrices)
• std::string and its member functions
• C-style strings, and why std::string is safer
• std::vector as an array that can grow

int marks[5] = {72, 85, 91, 64, 58};

• Memory addresses and the & operator
• Declaring and dereferencing pointers
• References, and when to use them instead of pointers
• Pointers and arrays
• Dynamic memory with new and delete, and avoiding leaks

int x = 7; int* p = &x; *p = 9;

• Classes, objects, and public and private members
• Constructors, destructors and member functions
• The this pointer
• Putting a class in a header and a source file

class Account { double balance = 0; public: void deposit(double a); };

• Encapsulation with getters and setters
• Inheritance and access levels
• Virtual functions and polymorphism
• Abstract classes with pure virtual functions
• Operator overloading basics

class Circle : public Shape { double area() const override; };

• std::vector, std::stack, std::queue and std::map
• A linked list built with pointers
• Stacks and queues built on arrays
• Linear and binary search; bubble and selection sort
• Exercise sets in the style of university lab tasks

std::sort(v.begin(), v.end());