Where I am getting wrong?

#1

#include
#include<bits/stdc++.h>
#include
using namespace std;

int main() {
char n;

cin>>n;
// n = n - '0';
// cout<<n<<endl;
if(n>=65 && n<=90)
{
	cout<<"UPPERCASE";
}
else if(n>=97 && n<=122)
{
	cout<<"LOWERCASE";
}
else{
	cout<<"INVALID";
}
return 0;

}