// Program to calculate student grades: Version 2
// Illustrates using a chain of if else if statements.

#include <iostream.h>
void main()
{
  double score;
  char letter_grade;
  cout << "Enter score (out of 100): ";
  cin >> score;
  if (score >= 90)
    letter_grade = 'A';
  else if (score >= 80)
    letter_grade = 'B';
  else if (score >= 70)
    letter_grade = 'C';
  else if (score >= 60)
    letter_grade = 'D';
  else
    letter_grade='F';
  cout << "Letter grade = "
       << letter_grade << endl;
}