text: // Section 9
  // Switch Statement
  
  /* 
      Ask the user what grade they expect on an exam and 
      tell them what they need to score to get it.
  */
  
  #include <iostream>
  
  using namespace std;
  
  int main() {
      
      char letter_grade {};
      
      cout << "Enter the letter grade you expect on the exam: ";
      cin >> letter_grade;
      
      switch (letter_grade) {
          case 'a':
          case 'A':
              cout << "You need a 90 or above, study hard!" << endl;
              break;
          case 'b':
          case 'B':
              cout << "You need 80-89 for a B, go study!" << endl;
              break;
          case 'c':
          case 'C':
              cout << "You need 70-79 for an average grade" << endl;
              break;
          case 'd':
          case 'D':
              cout << "Hmm, you should strive for a better grade. All you need is 60-69" << endl;
              break;
          case 'f':
          case 'F': {
              char confirm {};
              cout << "Are you sure (Y/N)? ";
              cin >> confirm;
              if (confirm == 'y' || confirm == 'Y') 
                  cout << "OK, I guess you didn't study..." << endl;
              else if (confirm == 'n' || confirm == 'N')
                  cout << "Good - go study!" << endl;
              else 
                  cout << "Illegal choice" << endl;
              break;
          }
             
          default:
              cout << "Sorry, not a valid grade" << endl;
      }
      
      
      
      cout << endl; 
      return 0;
  }
  