Programming Languages
219 articles in this topic
File Handling in C: fopen Modes, fscanf vs fgets and the Predict-the-Output Questions
Trace one text file byte by byte to see what fopen returns, where fscanf stops, why fgets may read a blank line and how to write a correct input loop.
Updated 25 Jul 20267 min read83 viewsC
Java vs Python for Placements in India 2026: Test Formats, Company Preferences and a Decision Guide
Choose one placement language by test access, DSA fluency and the interview story you want to tell. Then learn just enough of the second language to stay flexible.
24 Jul 20266 min readJava
Python vs C for TCS NQT: Which Language to Pick for the Coding Section
Choose Python or C for TCS NQT by comparing input speed, code length, execution and your existing practice, then lock the choice with a focused three-week routine.
Updated 24 Jul 20265 min readPython
C++ Programming: Complete Guide to Core Concepts with Worked Examples
Build a connected mental model of C++ through exact traces for references, pointers, virtual dispatch and STL operations, then learn how to check common traps.
Updated 29 Jul 20267 min readProgramming Languages Survey
Loops in C: for, while and do-while with worked examples
Learn how C loops initialise, test, execute and update. Trace complete programs, diagnose common bugs and practise choosing the right loop.
Updated 23 Jul 20266 min read60 viewsC++
Structures and Unions in C: Padding, Alignment and Worked sizeof Problems for GATE
Calculate structure and union sizes byte by byte, see where padding enters, and learn how member order changes the result.
Updated 22 Jul 20267 min read58 viewsC
Java 8 to Java 21 Features Interviewers Actually Ask: Streams, Records, Sealed Classes and Virtual Threads
Learn the modern Java features that lead to real interview follow-ups, with small code examples, version boundaries and the limits a strong answer should mention.
Updated 25 Jul 20265 min read395 viewsJava
Python Interview Questions for Freshers 2026: Core Language, Data Structures and Coding
Prepare concise, accurate answers to Python fresher interview questions, then test your object model on mutable defaults, complexity, coding patterns and output traps.
Updated 26 Jul 20266 min read56 viewsPython
Arrays in C: Declaration, Initialization and Worked Examples
Learn how C arrays behave through exact contents, safe loop bounds, function calls and two-dimensional traversal. A complete program traces sum, average and maximum.
Updated 21 Jul 20266 min readProgramming Languages
Object Oriented Technology Explained: Four Pillars, Worked Java Examples, GATE and Interview Patterns
Build object oriented technology on one running Java example. Learn the four pillars, trace exact outputs, and separate overloading from overriding.
Updated 21 Jul 20266 min readProgramming Languages Survey
C++ Tutorial: The Complete Learning Path from First Program to STL
Learn C++ in the order that makes difficult ideas manageable. This roadmap gives you six stages, practical checkpoints and a clear route into exam and placement practice.
Updated 21 Jul 20266 min read176 viewsC++
Functions in C: Call by Value vs Simulated Call by Reference and the Swap Question Family
See why a normal C swap changes only local copies, then trace the pointer version and the aliasing, increment, array, struct, and lifetime traps around it.
Updated 20 Jul 20266 min readC