Programming Languages
217 articles in this topic
JavaScript Basics: Types, Functions, Arrays and Async Code with Worked Examples
Build a reliable JavaScript mental model by tracing values, closures, arrays, object copies and queued work. A complete three-record example verifies every total.
Updated 5 Aug 20267 min readProgramming Languages Survey
C++ Iterators Tutorial with Examples: Traversal, Algorithms and Invalidation
Learn how C++ iterators connect containers to algorithms. Trace vector, list and map examples, then practise safe erasure and invalidation fixes.
Updated 5 Aug 20266 min read86 viewsC++
Conditionals in C: if, if-else, else-if and switch with runnable examples
Learn how C chooses a path through a program. Predict and trace complete examples covering conditions, ladders, logical operators, nesting and switch.
Updated 4 Aug 20266 min readC
Pattern Printing Programs in C, Java and Python: One Method for Every Star and Number Pyramid
Stop memorising separate pattern programs. Learn how two row-wise decisions generate star pyramids, number triangles and their common variations in C, Java and Python.
Updated 4 Aug 20265 min readJava
Python Decorators and Generators: yield, Closures and the Trace-the-Output Interview Questions
See decorators and generators as functions that retain state. Trace a wrapped call, expand @repeat(3), and follow countdown(3) through StopIteration.
Updated 4 Aug 20266 min readPython
Programming Languages for GATE: C Syllabus Areas, Weightage Pattern and Prep Order
Build a bounded C preparation map, calculate topic shares from your own PYQ audit, and practise two fully worked traces before following a 14-day study order.
Updated 3 Aug 20266 min readProgramming Languages Survey
Abstract Classes in C++: Pure Virtual Functions, Examples and Errors
Learn why an abstract base cannot be instantiated but remains useful through pointers and references. Trace two shapes, fix override errors and practise safe polymorphism.
Updated 3 Aug 20267 min readC++
STL Overview in C++: Containers, Iterators and Algorithms with Runnable Examples
Build a practical STL mental model, then trace seven scores through sorting, searching, filtering and aggregation. The same data clarifies map, set and priority_queue choices.
Updated 2 Aug 20268 min read70 viewsC
Java Coding Interview Questions: Programs Asked in Service-Company Drives
Prepare the short Java programs that recur in fresher drives. Learn the core string, array, number and collections patterns, then trace an O(n) Two-Sum solution.
Updated 1 Aug 20265 min readJava
OOP in Python: Classes, Inheritance, the MRO Diamond and Dunder Methods for Interviews
Work through Python's MRO diamond and the __eq__ plus __hash__ rule. These two examples explain many of the OOP output questions asked in interviews.
Updated 1 Aug 20265 min readPython
Language Design in Programming Languages: Syntax, Types, Scope and a Worked Evaluation
Trace one expression from source text to a value, then compare the design rules that make scope, typing, evaluation and mutation behave differently.
Updated 31 Jul 20266 min readProgramming Languages Survey
Function Overloading and Default Arguments in C++: Rules and Runnable Examples
Learn why overloading and default arguments are different C++ mechanisms. Compile one invoice program, trace every call, and repair ambiguous code.
Updated 31 Jul 20266 min readC++