wcsrtombs() function in C/C++
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 bytes
- src : Pointer to a wide string to be translated
- len : Maximum number of bytes available in dest array
- ps : 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 "GeekforBeginner" ; // 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 = GeekforBeginner
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
Contact Us