CHECK CAPITAL OR SMALL LETTER IN C++

#include <iostream>
using namespace std;

int main ()
{
    char ch;

    cout<<"PLEASE ENTER A LETTER : ";
    cin>>ch;


    if(ch>=97 && ch<=122)
    {
        cout<<ch<<" IS SMALL LETTER"<<endl;
    }
    else
    {
        cout<<ch<<" IS CAPITAL LETTER"<<endl;
    }

    return 0;
}

OUTPUT