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iswdigit() function in C/C++
The function iswdigit() is a built-in function in C/C++. It checks whether the wide character is a decimal digit or not. It is declared in “cwctype” header file in C++ language while “ctype.h” in C language. It takes a single character which is known as wide character.
The characters from 0 to 9 are classified as decimal digits. If the wide character is not a digit, it will return zero(0). If character is digit, it will return non-zero value.
Here is the syntax of iswdigit() in C++ language,
int iswdigit(ch)
Here is an example of iswdigit() in C++ language,
Example
#include <cwctype>
#include <iostream>
using namespace std;
int main() {
wchar_t c1 = '!';
wchar_t c2 = '8';
if (iswdigit(c1))
wcout << c1 << " , The character is a digit ";
else
wcout << c1 << " , The character is not a digit ";
wcout << endl;
if (iswdigit(c2))
wcout << c2 << ", The character is a digit ";
else
wcout << c2 << ", The character is not a digit ";
return 0;
}Output
! , The character is not a digit 8 , The character is a digit
Updated on: 24-Jun-2020
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