Advanced C++ Concepts

Advanced C++ features help build efficient, scalable, and high-performance applications.

1. Templates

Enable generic programming.

template <typename T>
T add(T a, T b) {
    return a + b;
}

Types:

• Function templates

• Class templates

• Template specialization

2. Standard Template Library (STL)

Provides ready-made data structures and algorithms.

Components:

• Containers (vector, map, set)

• Algorithms (sort, find)

• Iterators

Example:

vector<int> v = {3, 1, 2};
sort(v.begin(), v.end());

3. Exception Handling

Handles runtime errors safely.

Keywords:

• try

• catch

• throw

try {
    if (x == 0) throw x;
}
catch (int e) {
    cout << "Error";
}

4. Dynamic Memory Management

Memory allocation at runtime.

Operators:

• new

• delete

int* p = new int(10);
delete p;

5. File Handling

Used for permanent data storage.

Classes:

• ifstream

• ofstream

• fstream

ofstream file("data.txt");
file << "C++";
file.close();

6. Virtual Functions

Support runtime polymorphism.

class Base {
public:
    virtual void show() {
        cout << "Base";
    }
};

7. Abstract Classes

Contain at least one pure virtual function.

class Shape {
public:
    virtual void draw() = 0;
};

8. Namespaces

Prevent name conflicts.

namespace demo {
    int x = 10;
}

9. Smart Pointers

Automatic memory management.

Types:

• unique_ptr

• shared_ptr

• weak_ptr

unique_ptr<int> p = make_unique<int>(10);

10. Multithreading

Allows concurrent execution.

#include 
thread t(func);
t.join();

Key Points

• Improves performance and safety

• Encourages reusable code

• Essential for real-world applications

• Builds on OOP fundamentals

Conclusion

Advanced C++ concepts enhance program efficiency, maintainability, and scalability, making C++ suitable for large and complex systems.