The iswcntrl() is a built-in function in C++ STL which checks if the given wide character is a control character or not. It is defined within the cwctype header file of C/C++.
int iswcntrl(wint_t ch)
Parameter: The function accepts a single mandatory parameter ch which specifies the wide character which we have to check that if it is a control character or not.
Return Value: The function returns two values as shown below:
- If ch is a control character, then a non-zero value is returned.
- If it is not then it returns 0.
Below programs illustrates the above function.
It is a control Character
It is not a control Character
- Function Overloading vs Function Overriding in C++
- What happens when a virtual function is called inside a non-virtual function in C++
- fma() function in C++
- div() function in C++
- exp() function C++
- log() function in C++
- arc function in C
- fegetexceptflag() function in C/C++
- bit_and function in C++
- wcrtomb() function in C/C++
- wmemchr() function in C/C++
- wmemcmp() function in C/C++
- wcstoul() function in C/C++
- vswprintf() function in C/C++
- mbsinit() Function in C/C++
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.