Practical solutions

C++ Howtos How-To Guides

Solve the problem. Keep building. Collection of C++ how-to articles

Find the answer you need

Browse practical solutions, grouped by the task you're working on.

__COUNT__ entries on this page

C++ PointerHow to Access std::vector Members Through a Pointer in C++Learn how to call std::vector members through a pointer in C++, pass the vector pointer to a function, and iterate over its elements. C++ VectorHow to Shuffle Vector in C++This article introduces how to shuffle a vector in C++ C++ FunctionHow to Solve Control Reaches End of Non-Void Function Error in C++Learn why a C++ non-void function can reach its closing brace, how to cover every return path, and when a fallback value or compiler warning helps. C++ StringHow to Split a Comma-Separated String in C++Split a simple comma-separated string in C++ with std::stringstream and std::getline, or with std::string::find and std::string::substr. C++ OperatorThe or Operator in C++This article talks about OR operator in C++. C++ KeyHow to Detect Keypress in Windows Using C++Compare Windows C++ APIs for checking key state and handling low-level keyboard events. C++ ListHow to Iterate Through a C++ std::listLearn how to traverse a C++ std::list with an iterator, read or edit elements, and stop safely at end(). C++ OperatorHow to Overload the Bracket Operator in C++Learn how to overload C++ operator[] with mutable and const access, optional index checks, and a custom data-structure example. C++ IntegerUse of 128-Bit Integer in C++This tutorial discusses 128-bit integer in C++, its importance and possible alternatives. C++ VectorHow to Iterate Through a Vector in C++Learn four ways to traverse a C++ vector: indexed loops, range-based loops, iterators, and std::for_each. C++ FileHow to Check if a File Exists in C++Check a path with std::filesystem::exists in C++, distinguish files from directories, and build paths under a chosen directory. C++ FloatHow to Generate a Random Float Number in C++This article demonstrates how to generate a random float number in C++. C++ FileHow to Write to File in C++This article demonstrates how to write to a file in C++. Learn about file streams, different file modes, and see clear examples to effectively manage file operations in your C++ programs. Whether you need to append data or overwrite existing content, this guide has you covered. C++ StringHow to Find Length of a String in C++This article demonstrates how to find the length of a string in C++. Explore various methods, including built-in functions like length() and size(), as well as a custom loop approach. Learn how to effectively manage string data in your C++ programs with practical code examples and detailed explanations. C++ ClassHow to Call a Destructor Explicitly in C++Learn the explicit destructor-call syntax in C++, when cleanup happens automatically, and why an object must not be used after its lifetime ends. C++ IOHow to Use the STL Stringstream Class in C++Learn how to effectively use the STL stringstream class in C++. This article covers its functionalities, including string manipulation, conversion, and parsing, with practical examples. Enhance your C++ skills and streamline your coding practices with stringstream. C++ SortingHow to Sorting in C++ Standard Template Library (STL)This article will talk about sort() function which is present in the C++ standard template library (STL). C++ StringHow to Get the Last Character From a String in C++This article talks about getting the last character from a string in C++. C++ ContainerThe value_type in STL Containers in C++Learn what an STL container's value_type names, how to access it through a container type, and how to use it in generic C++ code. C++ OperatorHow to Overload the == Operator in C++This is a programming tutorial for the implementation of the == operator overloading in C++. C++ VectorHow to Calculate Angle Between Two Vectors in C++Calculate the principal angle between equal-dimension vectors in C++ with built-in arrays or std::array. Learn the dot product formula, radians and degrees, and how to handle zero vectors and signed angles. C++ IncludeC++ Include Paths: Configure Header SearchLearn how C++ include paths help the compiler find headers, and configure project header directories with compiler flags, IDE settings, or a Makefile. C++ ModuloHow to Use the Modulo Operator in C++This article introduces how to use the modulo operator in C++, covering its applications in checking even or odd numbers, implementing cyclic behavior, and utilizing it in algorithms. Learn practical examples and enhance your coding skills with clear explanations and code snippets. Perfect for beginners and experienced programmers alike. C++ HeapHow to Use STL Heap Algorithms in C++Learn how to build, sort, and update a C++ heap with STL algorithms.