Muhammad Husnain

howto · 2026-09-13

#pragma once in C++: Include Guards and Portability

Prevent repeated C++ header inclusion with #pragma once or include guards, and choose the right option for your toolchain.

howto · 2025-03-13

Character Input in While Loop Using C++

Learn how to take character input in a while loop using C++. This quick guide covers methods like cin, get(), and getline() for effective user input handling, making your applications interactive and user-friendly. Explore example codes and outputs to enhance your C++ programming skills today.

howto · 2025-03-13

How to Remove Illegal Characters in Filename in C#

Learn how to remove illegal characters from filenames in C

howto · 2025-03-12

Cotangent Function in C++

This guide explores the cotangent function in C++, offering clear examples and explanations. Learn how to implement trigonometric functions effectively, handle edge cases, and enhance your programming skills. Perfect for beginners and seasoned developers alike, this article provides practical insights into using the cotangent function in your C++ projects.

howto · 2025-03-12

Multiple Code Files in C++

This tutorial explores using multiple code files in C++ to enhance project organization and manageability. Learn how to separate files in a C++ project, improve collaboration, and streamline development. Discover the benefits of header and implementation files, and follow step-by-step instructions to create a structured codebase. Perfect for beginners and experienced developers alike, this guide will help you refactor and maintain your code more efficiently.

howto · 2025-03-12

Const Member Function in C++

Explore the concept of const member functions in C++ and learn how they help in writing safer, more maintainable code. This comprehensive guide covers declaration, usage, and benefits, making it essential for both beginners and experienced programmers.

howto · 2025-03-12

How to Print Binary of Number in C

Learn how to print the binary representation of a decimal number in C with this comprehensive tutorial. Explore methods using loops, bitwise operators, and recursion, complete with code examples and explanations. Enhance your programming skills and understand binary conversion in C today!

howto · 2025-03-12

How to Handle Arguments Using getopt in C++

This article demonstrates how to use the getopt function in C++ to handle command-line arguments effectively. Learn to parse options, manage required arguments, and create a user-friendly interface for your applications. With clear examples and detailed explanations, you'll enhance your C++ programming skills and improve usability.

howto · 2025-03-12

C++ Escape Characters

This article explains the rules for escape characters in string literals using C++. Discover how to effectively use escape sequences like \n, \t to enhance your C++ programming skills. Learn through clear examples and best practices that will help you manipulate strings with ease.

howto · 2025-03-12

Custom Exception in C++

Explore the implementation of custom exceptions in C++ with this comprehensive tutorial. Learn how to create, throw, and catch custom exception classes to enhance error handling in your applications. This guide covers best practices and provides code examples to help you manage unexpected situations effectively.

howto · 2025-03-11

How to Get IPv4 Address on Unix and Linux

This article provides a comprehensive guide on how to get your IPv4 address on Unix and Linux systems using both the terminal and the Linux Wizard. Learn step-by-step instructions and commands to quickly find your IP address for troubleshooting and configuration purposes.

howto · 2025-03-11

How to Understand the Extern Keyword in C++

This article introduces the extern keyword in C++, explaining its syntax for external variables and functions, and detailing their uses in modular programming. Learn how to effectively manage cross-file variable and function declarations to enhance your C++ projects.

howto · 2025-03-11

How to Solve Syntax Error Near Unexpected Token in Bash

This article demonstrates how to identify and correct unexpected token syntax errors in Bash scripts. Learn effective methods using Git commands and techniques to clean up invisible characters, ensuring your scripts run smoothly. Whether you're a beginner or experienced developer, mastering these troubleshooting skills will enhance your Bash scripting experience.

howto · 2025-03-11

How to Compile C++ Codes in macOS

This article is a comprehensive guide on how to compile C++ codes in macOS. Learn step-by-step methods using both the Terminal and Xcode, and discover essential tips for debugging your code effectively. Whether you are a beginner or looking to refine your skills, this guide will help you compile C++ programs with confidence.

howto · 2025-03-11

How to Get Function Signature

This tutorial explores how to get function signatures in Python, providing clear methods and examples for understanding function call details. Learn to use the inspect module, __doc__ attribute, and help function to retrieve valuable information about functions. Perfect for both beginners and experienced developers, this guide enhances your programming skills and improves code readability. Discover the best practices for extracting function signatures in Python and elevate your coding game today!

howto · 2025-03-11

How to Fix the Undefined Reference to Main Error in C++

This article explores the common "undefined reference to main" error in C++, discussing its causes and solutions. Learn how to check your main function, ensure proper file inclusion, and use correct compiler flags to fix this error. With clear explanations and examples, you'll be equipped to troubleshoot effectively and enhance your C++ coding experience.

howto · 2025-03-11

How to Check Exit Code in Bash

This article is a short tutorial on the various methods of getting the exit status while writing commands for Bash or for writing a Bash script. Learn how to check exit codes effectively using Git commands in Bash, including methods like using the `$?` variable, conditional execution, and the `trap` command. Enhance your scripting skills and ensure robust error handling in your Bash scripts.

howto · 2025-03-11

Functors in C++

Explore the world of functors in C++ with this quick tutorial. Learn what functors are, their advantages, and how they differ from regular functions and lambda expressions. This article provides clear examples and explanations to help you understand and implement functors effectively in your C++ code. Whether you're a beginner or an experienced programmer, this guide will enhance your coding skills.

howto · 2025-03-11

How to Check if String Contains a Substring in Bash

Learn how to check if a string contains a substring in Bash with this comprehensive tutorial. Explore various methods such as using the [[conditional expression, grep command, case statement, and expr command. Enhance your Bash scripting skills and efficiently manipulate strings for tasks like parsing logs and filtering outputs. Whether you're a beginner or an experienced developer, this guide will provide you with the tools you need to succeed in your Bash programming endeavors.

howto · 2025-03-04

How to Check Kernel Version in Linux

This article provides a comprehensive guide on how to check the running kernel version in Linux. Learn various methods, including using commands like uname, dmesg, and hostnamectl, to easily access kernel information. Ideal for system administrators, developers, and Linux enthusiasts, this guide ensures you have the knowledge to manage your system effectively.

howto · 2025-03-04

How to Implement Polynomial Regression in Python

A brief tutorial explaining Polynomial Regression in Python

howto · 2025-03-04

How to Detect and Remove Outliers in Python

This tutorial discusses the detection and removal of outliers in datasets in Python.

howto · 2025-02-26

Ternary Operator in Bash Script

Learn how to implement the ternary operator in Bash scripts with this quick guide. Discover various methods including command substitution, arithmetic evaluation, and custom functions to streamline your scripting. Enhance your coding efficiency and readability with practical examples and clear explanations. Perfect for beginners and experienced developers alike.

howto · 2024-02-23

Difference Between DWORD and Unsigned Int in C++

This article discusses DWORD and unsigned int in C++, including their definitions, importance, differences, and best practices.

howto · 2024-02-23

Double Free or Corruption Error in C++

This article explores double free and corruption errors in C++, offering solutions for better memory management.

howto · 2024-02-16

How to Detect Keypress in Windows Using C++

This article serves as a brief guide for handling keypress in the Windows application using C++.

howto · 2024-02-15

Operator Precedence and Associativity in C++

This article discusses about C++ operator precedence and associativity.

howto · 2024-02-15

How to Copy Constructor of Linked List in C++

The article explore linked lists, data structures, copy constructors, and methods in C++.

howto · 2024-02-12

How to Add Timed Delay in C++

This tutorial will give you a brief guide on adding a timed delay in your C++ program.

howto · 2024-02-02

How to Remove File Extension Using Bash

The step by step guide to remove file extension using cut command using shell script and its use in conjunction with pipes.

howto · 2024-02-02

How to Implement the for Loop in Bash

Trivial guide to write a for loop iterative structure using Bash script.

howto · 2024-02-02

How to Open a File at Specific Line Number Using Vi and Vim Editors

Easy guide to open a file at specific line number using vi or vim editor in Linux.

howto · 2024-02-02

How to Use the this Pointer in C++

This tutorial briefly introduces this pointer and its need and uses in C++. It further explains the difference between this and *this with the help of examples.

howto · 2024-02-02

How to Fix the Mkvirtualenv Command Not Found Error in Bash

This article serves as a guide to fix the mkvirtualenv command not found error in Bash.

howto · 2024-02-02

How to Dereference Pointers in C++

This tutorial provides a brief discussion on how to dereference a pointer in C++.

howto · 2024-02-02

How to Compile and Run C++ 11 Codes in Dev C++

This article is a brief guide for compiling and running C++ 11 codes using Dev C++ compiler.

howto · 2024-02-02

How to Format Specifiers in C

This is a guide about the syntax and use of format specifiers in the printf function in C.

howto · 2024-02-02

How to Create Formatted Strings in C

This is a compact article about formatting strings in C programming language.

howto · 2024-02-02

How to Fix the Multiple Definitions of a Function Error in C++

This article is about the solution to the error of multiple function definition in C++.

howto · 2024-02-02

How to Compare String and Character in C++

An article about the use of string and char in C++ and their comparison.

howto · 2024-02-02

How to Get IP Address in CentOS

A tutorial for getting server IP address in CentOS using command line interface.

howto · 2024-02-02

How to Exit From Bash Script

A beginner guide to Bash scripting and how to exit from a Bash script.

howto · 2024-02-02

How to Echo Tab Characters in Bash Script

This article demonstrates how to echo special characters such as tabs, which would otherwise be converted to a single space character in a Bash script. This extends to shells other than Bash (such as zsh).

howto · 2024-02-02

How to Read From a File or User Input in Bash

An article explaining about the input from user and from the file in Bash.

howto · 2024-02-02

How to Initialize 2D Vectors in C++

This article is a programming guide about the use and how to initialize 2-dimensional vectors in C++.

howto · 2024-02-02

How to Sort Linked List in C++

This programming tutorial demonstrates the implementation of the sort operation on a Linked List data structure in C++.

howto · 2024-02-02

How to Overload the == Operator in C++

This is a programming tutorial for the implementation of the == operator overloading in C++.

howto · 2024-02-02

How to Select Query for Database in C#

A complete programming tutorial about setting-up database connections and retrieving records using SELECT query in C#.

howto · 2024-02-02

How to Group by Multiple Columns in LINQ Queries Using C#

This is an article about the use of LINQ queries and how we can group by columns using LINQ queries.

howto · 2024-02-02

How to Set Up Client-Server Communication in C#

A programming tutorial explaining how to set up client-server communication in .NET framework using C#.

howto · 2024-02-02

How to Select Multiple Values Using WHERE in MySQL

This article will discuss using the WHERE clause in SQL queries. Moreover, it will discuss different methods for selecting multiple values using the WHERE clause.

howto · 2024-02-02

How to Find the Longest Common Substring in C++

This article explains the longest common substring problem and its solution using dynamic programming in C++.

howto · 2023-12-11

Reference Operator in C++

Learn the uses of the reference operator (&) in C++.

howto · 2023-10-12

Undefined Reference to Class::Function() in C++

A brief tutorial to resolve the linker error of Undefined References in C++.

howto · 2023-10-12

Serial Port Connection in C++

This article is an easy tutorial to read and write some data to serial ports in C++.

howto · 2023-10-12

Reflection in C++

A brief pointer to implement reflections in C++.

howto · 2023-10-12

Class Template Inheritance in C++

This article serves as a guide for implementing inheritance using class templates in C++.

howto · 2023-10-12

Recursive Fibonacci in C++

A small tutorial explaining how to implement Fibonacci series using recursive function in C++.

howto · 2023-10-12

Bitwise Operations in C

This article demonstrates the use of bitwise operations in C, and includes a notation of a commonly misunderstood shorthand notation for using these bitwise operations.

howto · 2023-10-12

Try Catch in C

This article demonstrates an example of implementing try-catch behavior in C, which by default, does not support try-catch/exception handling mechanisms.

howto · 2023-10-12

The new Keyword and No Match for Operator Error in C++

A brief article on the use of the new keyword in C++ and the solution to the common mistakes while using it.

howto · 2023-10-12

C++ Inheriting Constructors

A complete programming tutorial about inheritance in C++ and how we can inherit constructors.

howto · 2023-10-12

C++ Getters and Setters

A programming tutorial about encapsulation and data hiding in C++ and the use of getters and setters.

howto · 2022-06-30

Multiple if Conditions in Bash Script

A Bash programming tutorial about the use of multiple if conditions.

howto · 2022-06-13

The eval Command in Bash Script

A tutorial for explaining the use of eval command in Bash Script.