need help to fix my errors

[ali1]

Hi i am looking for following output.so far I am only getting result for total no of grades.I am getting 0 for A B C D and F.
total no of grades
Number of A's
Number of B
Numbers of C
Number of D
number of F

import java.util.Scanner;
public class ExamScores1
{
	public static void main (String[]args)
	{
		String a;
		int count= 0;

		int grade=0;     // you declare grade = 0 here
		int A=0;
		int B=0;
		int C=0;
		int D=0;
		int F=0;




		Scanner scan = new Scanner (System.in);
		System.out.println("Enter your exam grades");


		a=scan.nextLine();
		int len=a.length ();

		for (int i=0; i< len; i++)
		{
			if (a.charAt (i) ==' '){
				count--;
			}else {
				count++;

			}
		}


// grade is still == 0 here

		if (grade > 90 && grade <= 100) {
			grade= 'A';
			A++;
			count++;
		} else if (grade > 80 && grade <= 89) {
			grade= 'B';
			B++;
			count++;

		} else if (grade > 70 && grade <= 79) {
			grade= 'C';
			C++;
			count++;

		} else if (grade > 60 && grade <= 69) {
			grade= 'D';
			D++;
			count++;
		} else if (grade> 0 && grade <= 59) {
			grade= 'F';
			F++;
			count++;
		}
		System.out.println("total no of grades=" + count);
		System.out.println("Number of A=" + A);
		System.out.println("Number of B=" + B);
		System.out.println("Number of C=" + C);
		System.out.println("Number of D=" + D);
		System.out.println("Number of F=" + F);
	}
}

[Fubarable]

You're not doing your large if/else block inside of the for loop and so it's being called only once, and grade isn't even set when it's called. I would:

Put that code inside of the loop, and get the numeric value of each grade in the for loop. You will probably need to use a while loop not a for loop and use your Scanner to scan through the entered String and to pull out the grade ints. By the way, what is the form of their input? Should you tell the user how exactly they should enter the grades?

[Junky]

if (grade > 90 && grade <= 100) {
             grade= 'A';

Let's take a look at your code. Imagine that grade was 95. That makes the if statement true and enters that branch. The very next thing it does is set grade the the char 'A'. What is the point of that?

[Junky]

Scanner is a class in the Java API. If you are unfamiliar with it I suggest looking it up in the API. In short it a class that is used to gather user input.

[Fubarable]

@anyone that can answer.

Please don't hijack someone else's thread with your question. Instead ask your question in its own thread.

[ali1]

thats what i m trying to do.i want numerical grade.

if (grade > 90 && grade <= 100) {
             grade= 'A';

Let's take a look at your code. Imagine that grade was 95. That makes the if statement true and enters that branch. The very next thing it does is set grade the the char 'A'. What is the point of that?

[ali1]

can u plz explain me how to do that. i would tell user to enter his grades.so when user will enter numeric grades. i will get no of a,b,c,d,f he got.

[Junky]

thats what i m trying to do.i want numerical grade.

So why are you assinging it a char? It makes no sense.

[ali1]

no of A,B,C,D,F