C++

Performance & control

C++ is a high-performance language used in systems programming, game engines, embedded software and competitive programming.

Game Engines (Unreal)

Systems & OS

Embedded

Competitive Programming

HFT

Time to learn: 4-6 months

1Hello World

beginner

A minimal C++ program that prints to stdout.

#include <iostream>

int main() {
    std::cout << "Hello, ReadmeBuddy!\n";
    return 0;
}

2Vectors & Iteration

beginner

std::vector is the workhorse container of modern C++.

#include <iostream>
#include <vector>

int main() {
    std::vector<int> nums = {1, 2, 3, 4, 5};
    int total = 0;
    for (int n : nums) total += n;
    std::cout << "Sum = " << total;
}

3Smart Pointers

intermediate

Prefer unique_ptr and shared_ptr over raw new/delete to avoid leaks.

#include <memory>
#include <iostream>

struct Node { int value; };

int main() {
    auto n = std::make_unique<Node>();
    n->value = 42;
    std::cout << n->value;
}

4Templates

advanced

Templates enable powerful generic, zero-cost abstractions.

#include <iostream>

template <typename T>
T max_of(T a, T b) { return a > b ? a : b; }

int main() {
    std::cout << max_of(3, 7) << "\n";       // 7
    std::cout << max_of(1.2, 0.9) << "\n";   // 1.2
}

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