What is C++?
C++ is a general-purpose programming language developed by Bjarne Stroustrup as an extension of C. It supports both procedural and object-oriented programming.
Key features of C++
- ⚡ High performance — fast execution and efficient memory usage
- 🧠 Object-Oriented Programming (OOP) — supports classes and objects
- 🔧 Low-level memory control — direct access to memory using pointers
- 📦 Standard Template Library (STL) — ready-made data structures and algorithms
- 🔁 Reusability — code reuse using classes and inheritance
- 🌍 Portability — code can run on multiple platforms
Object-Oriented Programming (OOP)
C++ supports key OOP concepts:
- Encapsulation
- Inheritance
- Polymorphism
- Abstraction
OOP helps organize code into reusable objects, making large programs easier to manage.
Standard Template Library (STL)
STL provides built-in data structures like vectors, stacks, queues, and algorithms.
#include <vector>
#include <iostream>
using namespace std;
int main() {
vector v = {1, 2, 3};
v.push_back(4);
for(int x : v) {
cout << x << " ";
}
}
Memory control
C++ allows manual memory management using new and delete, giving developers full control.
int *p = new int(10); delete p;
Advantages of C++
- Very fast and efficient
- Supports multiple programming styles
- Widely used in industry
- Rich library support (STL)
Disadvantages of C++
- Complex syntax
- Manual memory management can cause errors
- Steeper learning curve
C++ is heavily used in game engines, browsers, and high-performance systems like financial trading platforms.
Summary
C++ is a powerful language with features like OOP, STL, and memory control, making it suitable for both low-level and high-level programming tasks.