SOURCE FILE: 150_multiway_formC.cpp

#include <iostream>
using namespace std ;

int main (void)
{
   double score ;
   char letterGrade ;
 
   do
   {
      cout << endl ;
      cout << "Please enter the score you received on the test \n" ;
      cout << "or assignment (a real number from 0 to 120): " ;

      cin >> score ;

      if (score < 0 || score > 120)
        cout << "\nPlease enter a score in the specified range.\n" ;
   } while (score < 0 || score > 120) ;

   if (score >= 91.5) letterGrade = 'A' ;
   else if (score >= 81.5) letterGrade = 'B' ;
   else if (score >= 71.5) letterGrade = 'C' ;
   else if (score >= 61.5) letterGrade = 'D' ;
   else /* score < 61.5 */ letterGrade = 'F' ;

   cout << "\nYour letter grade is " << letterGrade << ".\n\n" ;

   return 0;
}