# Stack in C++: Complete Beginner-to-Advanced Guide

> Master the Stack data structure in C++ from LIFO fundamentals and STL std::stack to custom Vector, Array, and Linked List implementations and the top 5 competitive programming Stack problems.

- Canonical URL: https://shafinchowdhury.dev/topics/stack/
- Author: Shafin Chowdhury (https://shafinchowdhury.dev/about/)

The Stack is one of the most foundational linear data structures in computer science. Governed by the Last-In, First-Out (LIFO) principle, stacks power function call execution, recursion, expression evaluation, undo history, and linear-time monotonic stack algorithms. Follow this progressive 5-part curriculum from core concepts to three from-scratch C++ implementations and classic competitive programming problems.

## Curated Learning Path

1. **[Beginner]** [Understanding Stack in C++](https://shafinchowdhury.dev/posts/understanding-stack-in-cpp/) ([Markdown](https://shafinchowdhury.dev/posts/understanding-stack-in-cpp.md)) — What a Stack is, how LIFO works, core operations (push, pop, top, empty, size), C++ STL std::stack, real-world applications, and complexity.
2. **[Beginner]** [Stack Using Vector in C++](https://shafinchowdhury.dev/posts/stack-using-vector-in-cpp/) ([Markdown](https://shafinchowdhury.dev/posts/stack-using-vector-in-cpp.md)) — How std::vector works as a dynamic array and how to build a complete Stack class using push_back(), pop_back(), and back().
3. **[Intermediate]** [Stack Using Array in C++](https://shafinchowdhury.dev/posts/stack-using-array-in-cpp/) ([Markdown](https://shafinchowdhury.dev/posts/stack-using-array-in-cpp.md)) — Building a fixed-size Stack from scratch without STL, understanding top = -1, handling Stack Overflow and Underflow, and dry runs.
4. **[Intermediate]** [Stack Using Linked List in C++](https://shafinchowdhury.dev/posts/stack-using-linked-list-in-cpp/) ([Markdown](https://shafinchowdhury.dev/posts/stack-using-linked-list-in-cpp.md)) — Dynamic node allocation on the heap using new and delete, head-as-top pointer mechanics, destructor cleanup, and Array vs Linked List trade-offs.
5. **[Advanced]** [Top 5 Famous Stack Problems in Competitive Programming](https://shafinchowdhury.dev/posts/top-5-stack-problems-in-cpp/) ([Markdown](https://shafinchowdhury.dev/posts/top-5-stack-problems-in-cpp.md)) — Solve Valid Parentheses, Min Stack, Next Greater Element, Daily Temperatures, and Largest Rectangle in Histogram with monotonic stack patterns.

## Articles by Category

### 1. Core Concepts & C++ STL

LIFO fundamentals, abstract data type rules, std::stack usage, and real-world system applications.

- [Stack in C++: Complete Beginner's Guide](https://shafinchowdhury.dev/posts/understanding-stack-in-cpp/): Learn the Stack data structure in C++ from scratch. Understand LIFO (Last In, First Out), core stack operations (push, pop, top, empty, size), std::stack in STL, real-world applications, and time complexity. ([Markdown](https://shafinchowdhury.dev/posts/understanding-stack-in-cpp.md))

### 2. Custom Stack Implementations in C++

Step-by-step class implementations using dynamic vectors, fixed-size arrays, and pointer-based singly linked lists.

- [Stack Using Vector in C++: Step-by-Step Class Implementation](https://shafinchowdhury.dev/posts/stack-using-vector-in-cpp/): Learn how to implement a Stack using std::vector in C++. Includes visual diagrams, step-by-step explanations of push_back, pop_back, and back, a complete C++ class implementation, and complexity analysis. ([Markdown](https://shafinchowdhury.dev/posts/stack-using-vector-in-cpp.md))
- [Stack Using Array: Fixed-Size Implementation, Overflow & Dry Run](https://shafinchowdhury.dev/posts/stack-using-array-in-cpp/): Learn how to implement a Stack using a fixed-size array in C++ without STL. Understand why top starts at -1, how push and pop work, Stack Overflow and Underflow, visual dry runs, and why pop() doesn't erase physical memory. ([Markdown](https://shafinchowdhury.dev/posts/stack-using-array-in-cpp.md))
- [Stack Using Linked List in C++: Dynamic Node & Pointer Implementation](https://shafinchowdhury.dev/posts/stack-using-linked-list-in-cpp/): Learn how to implement a Stack using a singly linked list in C++ from scratch. Understand Node structs, the top pointer, dynamic memory allocation with new and delete, destructor cleanup, visual pointer diagrams, and array vs linked list trade-offs. ([Markdown](https://shafinchowdhury.dev/posts/stack-using-linked-list-in-cpp.md))

### 3. Competitive Programming & Monotonic Stacks

Classic interview and contest problems mastering bracket matching, O(1) prefix minimums, and monotonic stacks.

- [Top 5 Famous Stack Problems in Competitive Programming (With C++ Solutions)](https://shafinchowdhury.dev/posts/top-5-stack-problems-in-cpp/): Master the 5 most famous Stack problems in competitive programming and coding interviews: Valid Parentheses, Min Stack, Next Greater Element, Daily Temperatures, and Largest Rectangle in Histogram—complete with C++ code, dry runs, and monotonic stack diagrams. ([Markdown](https://shafinchowdhury.dev/posts/top-5-stack-problems-in-cpp.md))