#include
using namespace std;
int main() {
char c;
cout << “enter a character:”;
cin >> c;
if(c>=65&&c<=90)
cout<<“you entered an upper case character”<<c<<endl;
else if(c>=97&&c<=122)
cout<<“you entered a lower case character”<<c<<endl;
else
cout<<"invalid "<<endl;
return 0;
}