C Program: Reverse String Using Stack (DSA) - Step-by-Step Implementation
Learn how to reverse a string using the Stack data structure in C! This tutorial covers the logic and the full code implementation of one of the most common DSA interview questions.
By pushing characters of a string onto a stack and then popping them back, the LIFO (Last-In, First-Out) property naturally reverses their order. This video is perfect for students preparing for lab exams or coding interviews.
What you will learn:
✅ The "Push-then-Pop" logic for string reversal.
✅ How to handle char data types in a C Stack.
✅ Using strlen() from the string.h library.
✅ Implementing a char pop() function that returns values.
✅ A complete walk-through of the code with a live demo.
📍 Timestamps:
00:00 - Introduction: Reversing "DATA" using a Stack
01:17 - Visualizing the Push & Pop phase
03:09 - Setting up the C environment and Global Variables
04:10 - Adapting the push() function for characters
05:40 - Getting user input with scanf
06:58 - Using strlen() to iterate through the string
09:20 - The Push Loop: Moving characters to the Stack
10:45 - The char pop() function: Returning the top element
13:15 - The Pop Loop: Storing results in the output string
16:11 - Testing the code with "APPLE" - "ELPPA"
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