// C version - Compute a letter grade based on a score 0-100
// Dan McElroy, San Jose City College
//
// Input: score
// Output: "Your grade is X which is YY"
//    where:  X = letter grade A, B, C, D, F
//        YY = message
#include <stdio.h>

int main(int argc, char*argv[])
{
    double score;
    char grade;
    char *message;  // use a pointer for the message to display
    
    // read the score from the keyboard
// ----> change scanf to scanf_s when using MS Visual Studio "Community" Edition
    printf ("Enter a score: ");  // prompt
    scanf ("%lf", &score);       // read the keyboard
           
    score += 0.5;      // round up by .5 points
    if (score >= 90)     
    {
        grade = 'A';
        message = "Outstanding";
    }
    else if (score >= 80)     
    {
        grade = 'B';
        message = "Exceeds Expectations";
    }
    else if (score >= 70)     
    {
        grade = 'C';
        message = "Acceptable";
    }
    else if (score >= 60)     
    {
        grade = 'D';
        message = "Poor";
    }
    else if (score >= 0)     
    {
        grade = 'F';
        message = "Dreadful";
    }
    else   // default      
    {
        grade = '?';
        message = "Troll";
    }
    
    // display the results
    printf ("Your grade is: %c, which is %s\n", grade, message);

    return 0;
 }