package com.mhm;
import java.util.Scanner;
public class StudentGrade {
public static void main(String[] args) {
System.out.println("Enter your grade: ");
Scanner in = new Scanner(System.in);
String grade = in.nextLine();
//a program that prompts the user to enter the grade for student and show up a massege for him
1-if he gets A write Excellent
2-if he gets B write OutStanding
3- if he gets C write Good
4-if he gets D write Can Do Better
5- if he gets f write Failed !
if user entered another grade write invaild grade
switch (grade) {
case "A":
System.out.println("Excellent.");
break;
case "B":
System.out.println("OutStanding.");
break;
case "C":
System.out.println("Good");
break;
case "D":
System.out.println("Can Do Better ");
break;
case "F":
System.out.println("Failed !");
break;
default:
System.out.println("invalid grade ");
}
}
}
>Solution :
Generally, there’s a couple ways you can handle this, depending on how much you like recursion. But here’s an iterative option that works by setting a flag regarding whether or not you should continue the loop.
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
boolean flag = true; //We will set this variable to false in order to indicate that we should exit the loop.
while (flag) {
System.out.print("Enter your grade: ");
String grade = in.nextLine();
switch (grade) {
//As DevilsHnd notes, you might also want to use 'switch (grade.toUpperCase()) {' so that your program is case-insensitive.
case "A":
System.out.println("Excellent!");
flag = false; //This indicates we should exit the loop.
break;
case "B":
System.out.println("Outstanding!");
flag = false; //This also indicates we should exit the loop.
break;
/**
* More cases go here
*/
default:
System.out.println("Sorry, I didn't understand that. Could you try again?");
//Note that we're not setting flag to false this time. This is because we are not exiting the loop.
}
}
in.close(); //Don't forget to close your resources!
}