Solution Review: Find the Previous Alphabet

#include <iostream>
using namespace std;
int main() {
  // Stores B in a character variable
  char character = 'B';
  // Prints character value
  cout << "Given character = " << character << endl;
  // Initializes another variable character_before
  char character_before ;
  // Decrement 1 from the character and then 
  //store the updated value in character_before
  character_before = character-1;
  // Prints updated value
  cout << "Character before = " << character_before << endl;
  return 0;
}