Solution Review: Check if the Given Character is an Alphabet

#include <iostream>
using namespace std;
int main() {
  // Initialize variable character
  char character = 'a';
  
  // if block
  if (character >= 'A' && character <= 'Z') {
    cout << "upper-case alphabet";
  }
  // else if block
  else if (character >= 'a' && character <= 'z') {
    cout << "lower-case alphabet";
  }
  // else block
  else {
    cout << "not an alphabet";
  }
  return 0;
}