iswalnum() in C++

iswalnum(): This function is available in the file wchar.h. This function checks whether a wide character is an alphabetic letter (either uppercase or lowercase) or a decimal digit. This function returns a value different from zero (i.e. true) if indeed c is either a digit or a letter. Zero (i.e. false) otherwise.

Parameters: One parameter is required for this function.

arg: A wide character to be checked, cast into wint_t.

Syntax:

int iswalnum(wint_t _C)

iswalnum(arg)

For Example:

iswalnum('A')  = > It returns true.

Approach

C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    wchar_t C = 'A';

    cout << iswalnum(C) << "\n";

    return 0;
}