The iswlower() function is defined in <cwctype> header file.
iswlower() prototype
int iswlower(wint_t ch);
The iswlower() function checks if ch is a lowercase character i.e one of the following
a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z.
iswlower() Parameters
- ch: The wide character to check.
iswlower() Return value
- The iswlower() function returns non zero value if ch is a lowercase character.
- It returns zero if ch is not a lowercase character.
Example: How iswlower() function works?
#include <cwctype>
#include <iostream>
#include <clocale>
using namespace std;
int main()
{
setlocale(LC_ALL, "en_US.UTF-8");
wchar_t ch1 = L'\u03a0';
wchar_t ch2 = L'\u03c0';
wcout << L"islower(" << ch1 << ") returned " << boolalpha << (bool)iswlower(ch1) << endl;
wcout << L"islower(" << ch2 << ") returned " << boolalpha << (bool)iswlower(ch2) << endl;
return 0;
}
When you run the program, the output will be:
islower(Π) returned false islower(π) returned true
