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Thread: java scanner programming help

  1. #1
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    Default java scanner programming help

    Write a program that accepts the letter grades for a student, calculates the student's gpa, and prints it out, along with one of the following five messages:

    Eligible
    Ineligible, taking less than 4 classes
    Ineligible, gpa below 2.0
    Ineligible, gpa above 2.0 but has F grade (note: gpa >= 2.0)
    Ineligible, gpa below 2.0 and has F grade

    2. Your program must use an appropriate sequence of nested if-else statements to print out the appropriate message.

    3. The message "Ineligible, taking less than 4 classes" has priority over the other 3 ineligible cases.

    4. The class will not ask the user for how many grades are in a student's report card. The program will continue to read grades until a non-grade character is input. At this point, some type of loop will cease and the program prints the GPA value and the eligibility message.

    5. Example of run output: GPA = 3.75 Eligible

    6. You do not have to print out any of the individual grades.

    7. Your program should allow input of grades in either upper or lower case.

     
    import java.util.Scanner;
    public class grades {
     
    	/**
    	 * @param args
    	 * @return 
    	 */
    	public static  void main(String[] args);
     
    		// TODO Auto-generated method stub
    		Scanner in = new Scanner(System.in);
    		double GPA=in.nextDouble();
    		System.out.println("GPA = ");
    		if ( GPA == 4.0){
    			System.out.println("A");
     
    		}else{
    				if (GPA >=3.0 || < 4.0)
    					System.out.println("B");
     
    		}else{
    				if (GPA >=2.0 || < 3.0)
    					System.out.println("C");
     
    		}else{ 
    				if (GPA >=1.0 || < 2.0)
    					System.out.println("D");}
    	else {
    		if (GPA == 0){
    			System.out.println("F");
    	}

    iwas just wondering from my piece of code so far if this is correct and the syntax of my else if statements are also correct. i seem to have been getting stuck a very good amount of times so help is appreciated thank you


  2. #2
    Member Darryl.Burke's Avatar
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    Default Re: java scanner programming help

    Cross posted, with several responses before this was posted here
    scanner questions - Java Forums
    Also on
    Java Grades Programming Help!!? - Yahoo! Answers


    db

  3. #3
    mmm.. coffee JavaPF's Avatar
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    Default Re: java scanner programming help

    Hello socboy6579,

    Welcome to the forums.

    There are lot's of problems with your code.

    You should be doing something like this:

    import java.util.Scanner;
     
    public class grades {
     
    	public static void main(String[] args){
     
        Scanner in = new Scanner(System.in);
     
        double GPA=in.nextDouble();
     
        System.out.println("GPA = ");
     
        if ( GPA == 4.0){
            System.out.println("A");
     
        }
        else if (GPA >= 3.0 || GPA < 4.0){
                    System.out.println("B");
        }
     
        else if (GPA >= 2.0 || GPA < 3.0){
                    System.out.println("C");
        }
     
        else if (GPA >= 1.0 || GPA < 2.0){
                    System.out.println("D");
        }
        else if (GPA == 0){
            System.out.println("F");
        }
    }
    }
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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