wctype() function in C/C++
The wctype() is a built-in function in C/C++ which returns a value of type wctype_t that is used for classifying a wide character. It is defined within the cwctype header file of C++. The following are the possible type wctype_t:
Value of str |
Equivalent function |
space |
iswspace |
upper |
iswupper |
xdigit |
iswxdigit |
print |
iswprint |
punct |
iswpunct |
graph |
iswgraph |
lower |
iswlower |
cntrl |
iswcntrl |
digit |
iswdigit |
alpha |
iswalpha |
blank |
iswblank |
alnum |
iswalnum |
Syntax:
wctype_t wctype(const char* str)
Parameter: The function accepts a single mandatory parameter str which specifies the desired wctype category.
Return Value: The function returns two values as shown below:
- The function returns a wctype_t object that can be used with iswctype() ortowctype() to check a wide character’s property.
- If str doesn’t provide a category supported by the current C locale, it returns zero.
Below programs illustrates the above function.
Program 1:
#include <bits/stdc++.h>
using namespace std;
int main()
{
wchar_t wc = L '@' ;
if (iswctype(wc, wctype( "digit" )))
wcout << wc << L " is a digit" ;
else if (iswctype(wc, wctype( "alpha" )))
wcout << wc << L " is an alphabet" ;
else
wcout << wc << L " is neither an"
<< " alphabet nor a digit" ;
return 0;
}
|
Output:
@ is neither an alphabet nor a digit
Output:
@ is neither an alphabet nor a digit
Program 2:
#include <bits/stdc++.h>
using namespace std;
int main()
{
wchar_t wc = L 'g' ;
if (iswctype(wc, wctype( "digit" )))
wcout << wc << L " is a digit" ;
else if (iswctype(wc, wctype( "alpha" )))
wcout << wc << L " is an alphabet" ;
else
wcout << wc << L " is neither"
<< " an alphabet nor a digit" ;
return 0;
}
|
Last Updated :
04 Sep, 2018
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