// 9/25/2017
// longer if else-if
// show with switch stmt
// Goal: Check grades and print letter grade based upon semester avg
// 90-100  A   80-89  B   70-79 C   65-69   D    <65  F

import java.util.Scanner;

public class Grades {
  
  public static void main(String[] args)   {
    
     Scanner in = new Scanner(System.in);
     double gradeAvg=45;
     if (gradeAvg >= 90)
         System.out.println("A");
     else if (gradeAvg >= 80) 
         System.out.println("B");
     else if (gradeAvg >= 70) 
         System.out.println("C");
     else if (gradeAvg >= 65) 
         System.out.println("D");
     else // <65
         System.out.println("F");
     
     // Give an example with a menu
     System.out.println("Enter the number to the left of grade: ");
     System.out.print("1: 90-100\n" + 
                       "2: 80-89\n" +
                       "3: 70-79\n" +
                       "4: 65-69\n" +
                       "5:  <65\n");
     int choice=in.nextInt();
     /*instead of if else if which checks value of an integer
      * variable, we can use switch stmt 
     if (choice==1)
     else if (choice==2) */
     switch (choice) {
       case 1: 
               System.out.println("Grade is A.");
               break;
       case 2: 
               System.out.println("Grade is B.");
               break;
       case 3: 
               System.out.println("Grade is C.");
               break;
       case 4: 
               System.out.println("Grade is D.");
               break;
       case 5: 
               System.out.println("Grade is F.");
               break;
       default: 
               System.out.println("Input invalid.");
     }
     
     
     
     
     }
}