what is iswlower() function in C++ ?

what is iswlower ()?

iswlower() is a function provided by the C and C++ standard libraries for working with wide characters (wchar_t), which are capable of representing a broader range of characters than the regular char type. Specifically, iswlower() is used to determine whether a wide character is a lowercase letter.

#include <cwctype>

int iswlower(wint_t wc);

• iswlower() takes a single argument wc, which is a wide character (wchar_t or a compatible type).
• • It returns a non-zero value if wc is a lowercase letter (a-z in the ASCII character set or equivalent in other character sets supported by wide characters). Otherwise, it returns zero.

  Here’s a simple example demonstrating the usage of iswlower():

 

#include <iostream>
#include <cwctype>

int main() {
    // Define a wide character 'a'
    wchar_t ch = L'a';

    // Check if the character is a lowercase letter
    if (iswlower(ch)) {
        std::wcout << L"The character '" << ch << L"' is a lowercase letter." << std::endl;
    } else {
        std::wcout << L"The character '" << ch << L"' is not a lowercase letter." << std::endl;
    }

    return 0;
}

In this example, we use iswlower() to determine whether the wide character ‘a’ is a lowercase letter. If it is, we print a message indicating that it’s a lowercase letter; otherwise, we print a message indicating that it’s not.

Output  of the  code :

The character 'a' is a lowercase letter.


=== Code Execution Successful ===