The iswgraph() function is defined in <cwctype> header file.
iswgraph() prototype
int iswgraph(wint_t ch);
The iswgraph() function checks if ch has a graphical representation as classified by the current C locale. By default, the following characters are graphic:
- Digits (0 to 9)
- Uppercase letters (A to Z)
- Lowercase letters (a to z)
- Punctuation characters (!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~)
iswgraph() Parameters
- ch: The wide character to check.
iswgraph() Return value
- The iswgraph() function returns non zero value if ch has a graphical representation character.
- It returns zero if ch has no graphical representation character.
Example: How iswgraph() function works?
#include <cwctype>
#include <iostream>
#include <clocale>
using namespace std;
int main()
{
setlocale(LC_ALL, "en_US.UTF-8");
wchar_t ch1 = L'\u0009';
wchar_t ch2 = L'\u03a9';
iswgraph(ch1)? wcout << ch1 << L" has graphical representation" : wcout << ch1 << L" does not have graphical representation";
wcout << endl;
iswgraph(ch2)? wcout << ch2 << L" has graphical representation" : wcout << ch2 << L" does not have graphical representation";
return 0;
}
When you run the program, the output will be:
does not have graphical representation Ω has graphical representation