Programming Languages
119 articles in this topic
JavaScript Promises and async/await Explained: Error Handling, Execution Order, and Output Questions
Build a precise call-stack and queue model, use it to predict six output lines, and see why one missing await can move a rejection beyond try/catch.
Python Tuples Tutorial: Packing, Unpacking, Methods and Examples
Learn how Python tuples work through runnable examples, a fixed-record route program, precise error fixes and four predict-before-running exercises.
Functions in C: 12 Solved MCQs on Declarations, Definitions and Function Types
Separate a C function's prototype, body and call, then practise the details through 12 explained questions covering parameters, return values and linking.
Templates in C++: Function and Class Templates with Runnable Examples
Learn how C++ templates turn one type-safe blueprint into reusable functions and classes. Trace deduction, fix compiler errors, and test each idea with runnable examples.
Strings in C Tutorial: Declaration, Input, Functions and Worked Examples
Learn how C strings use character arrays and the null terminator, then practise safe input, traversal, reversal, library calls and capacity checks.
Interface vs Abstract Class in Java: Differences, Default Methods and Exam Questions
Replace the old textbook rule with a current comparison, then solve the two-default-method conflict that appears in Java output and compilation questions.
Python Lists Tutorial: Create, Update, Slice and Use Lists with Examples
Learn Python lists through one clear path, from creation and indexing to mutation, comprehensions, copying, and exam-style output questions.
Visual Basic Programming Language: Core Concepts with a Worked VB.NET Example
Connect VB.NET syntax to a real Windows Forms event. Build and trace an invoice calculator that validates text input, applies a discount, and displays the exact result.
Map and Set in C++: Runnable STL Examples, Traps and Exercises
Learn when to choose std::map or std::set through complete programs, an event-by-event trace, complexity guidance, common mistakes and practice tasks.
Multidimensional Arrays in C: 2D Arrays, Row-Major Memory and Runnable Examples
Learn how C lays out and traverses fixed-size multidimensional arrays. A complete 3-by-4 sales program connects indexing, totals, addresses and function parameters.
Exception Handling in Java: Checked vs Unchecked, finally Traps and Output Questions
Replace guesswork with precise Java exception rules. Trace two classic finally outputs, order catches correctly, and preserve causes when wrapping failures.
Python Dictionaries Tutorial: Syntax, Methods and Worked Examples
Learn how Python dictionaries store, retrieve and transform key-value data through runnable examples, common traps and one complete marks-processing task.