wcsrtombs() function in C/C++ Last Updated : 08 Jun, 2021 Summarize Comments Improve Suggest changes Share Like Article Like Report The wcsrtombs() function converts wide character to multibyte string. This function converts the wide character string represented by *src to corresponding multibyte character string and is stored in the character array pointed to by dest if dest is not null. A maximum of len characters are written to dest.Syntax: size_t wcsrtombs( char* dest, const wchar_t** src, size_t len, mbstate_t* ps ) Parameters: The function accepts four mandatory parameters which are described below: dest : Pointer to an array of char elements long enough to store a string of max bytessrc : Pointer to a wide string to be translatedlen : Maximum number of bytes available in dest arrayps : Pointer to the conversion state object Return value : The function returns two value as below: On success it returns the number of bytes written to dest(not including the eventual terminating null character)If some error occurs then -1 is returned and errno is set to EILSEQ. Below programs illustrate the above function: Program 1: CPP // C++ program to illustrate // wcsrtombs() function #include <bits/stdc++.h> using namespace std; int main() { // initialize the string const wchar_t* src = L"Geekforgeeks"; // maximum length of the dest char dest[20]; // initial state mbstate_t ps = mbstate_t(); // maximum length of multibyte character int len = 12; // function to convert wide-character // to multibyte string int value = wcsrtombs(dest, &src, len, &ps); cout << "Number of multibyte characters = " << value << endl; cout << "Multibyte characters written = " << dest << endl; return 0; } Output: Number of multibyte characters = 12 Multibyte characters written = Geekforgeeks Program 2: CPP // C++ program to illustrate // wcsrtombs() function #include <bits/stdc++.h> using namespace std; int main() { // initialize the string const wchar_t* src = L"This website is the best"; // maximum length of the dest char dest[20]; // initial state mbstate_t ps = mbstate_t(); // maximum length of multibyte character int len = 14; // function to convert wide-character // to multibyte string int value = wcsrtombs(dest, &src, len, &ps); cout << "Number of multibyte characters = " << value << endl; cout << "Multibyte characters written = " << dest << endl; return 0; } Output: Number of multibyte characters = 14 Multibyte characters written = This website i Comment More infoAdvertise with us A AmanSrivastava1 Follow Improve Article Tags : C++ CPP-Functions C-Library Practice Tags : CPP Similar Reads C++ Programming Language C++ is a computer programming language developed by Bjarne Stroustrup as an extension of the C language. It is known for is fast speed, low level memory management and is often taught as first programming language. It provides:Hands-on application of different programming concepts.Similar syntax to 5 min read Object Oriented Programming in C++ Object Oriented Programming - As the name suggests uses objects in programming. Object-oriented programming aims to implement real-world entities like inheritance, hiding, polymorphism, etc. in programming. The main aim of OOP is to bind together the data and the functions that operate on them so th 5 min read 30 OOPs Interview Questions and Answers [2025 Updated] Object-oriented programming, or OOPs, is a programming paradigm that implements the concept of objects in the program. It aims to provide an easier solution to real-world problems by implementing real-world entities such as inheritance, abstraction, polymorphism, etc. in programming. OOPs concept is 15 min read Inheritance in C++ The capability of a class to derive properties and characteristics from another class is called Inheritance. Inheritance is one of the most important features of Object-Oriented Programming in C++. In this article, we will learn about inheritance in C++, its modes and types along with the informatio 10 min read Vector in C++ STL C++ vector is a dynamic array that stores collection of elements same type in contiguous memory. It has the ability to resize itself automatically when an element is inserted or deleted.Create a VectorBefore creating a vector, we must know that a vector is defined as the std::vector class template i 7 min read Templates in C++ C++ template is a powerful tool that allows you to write a generic code that can work with any data type. The idea is to simply pass the data type as a parameter so that we don't need to write the same code for different data types.For example, same sorting algorithm can work for different type, so 9 min read C++ Interview Questions and Answers (2025) C++ - the must-known and all-time favourite programming language of coders. It is still relevant as it was in the mid-80s. As a general-purpose and object-oriented programming language is extensively employed mostly every time during coding. As a result, some job roles demand individuals be fluent i 15+ min read Operator Overloading in C++ in C++, Operator overloading is a compile-time polymorphism. It is an idea of giving special meaning to an existing operator in C++ without changing its original meaning.In this article, we will further discuss about operator overloading in C++ with examples and see which operators we can or cannot 8 min read C++ Standard Template Library (STL) The C++ Standard Template Library (STL) is a set of template classes and functions that provides the implementation of common data structures and algorithms such as lists, stacks, arrays, sorting, searching, etc. It also provides the iterators and functors which makes it easier to work with algorith 9 min read C++ Classes and Objects In C++, classes and objects are the basic building block that leads to Object-Oriented programming in C++. We will learn about C++ classes, objects, look at how they work and how to implement them in our C++ program.C++ ClassesA class is a user-defined data type, which holds its own data members and 9 min read Like