#include <iostream.h>
#include <math.h>
#include "CPstring.h"

// file: getgradealt.cc
// demo a function that returns a string value
// demo cascaded else/if style
// nested function invocation
// functions that return values

string Grade(double score)
{
   if (score > 90.0) return "A" ;
   else if (score > 80.0) return "B" ;
   else if (score > 70.0) return "C" ;
   else if (score > 60.0) return "D" ;
   else return "F" ;
}

double Curve(double score)
{
   return 10.0 * sqrt(score);
}

int main()
{
   double grade;

   cout << "Enter your numberic grade: ";
   cin >> grade;

   cout << "Your raw grade is: " << Grade(grade) << endl;
   cout << "Your curved grade is: " << Grade(Curve(grade)) << endl;

   return 0;
}

Sample output:
< getgradealt
><Enter your numberic grade: 56
> Your raw grade is: F
> Your curved grade is: C

< getgradealt
>< Enter your numberic grade: 45
> Your raw grade is: F
> Your curved grade is: D

< getgradealt
>< Enter your numberic grade: 80
> Your raw grade is: C
> Your curved grade is: B