#include
using std::cin;
using std::cout;
using std::endl;
int main() {
char letter = 'S';
if(letter >= 'A') {
if(letter <= 'Z') {
cout << "You entered an uppercase letter."
<< endl;
return 0;
}
}
if(letter >= 'a')
if(letter <= 'z') {
cout << "You entered a lowercase letter."
<< endl ;
return 0;
}
return 0;
}
You entered an uppercase letter.