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Thread: help me with my code

  1. #1
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    Default help me with my code

    Am trying to print the grade btw 40 and 90 be those that passed and less than 40 for those that failed the exams.

    the the else statement to meet the condition (No grade is entered) is giving me error as well saying else without if

    someone pls help
    thanks
    public class NewClassIfmethod {
        private String courseName;
            //starting a constructor 
     
            public NewClassIfmethod (String name){
            courseName = name;
            } 
            //endin the constructor
            //creating a new method setNewClassIfmethod 
            public void setNewClassIfmethod (String name){
                courseName = name;
            } 
            // creating a method to getNewClassIfmethod
            public String getNewClassIfmethod(){
                return courseName;
            }
            public void displayMessage(){
                System.out.printf("Welcome to the world of Java programing %s\n\n" , getNewClassIfmethod());
            }
     
                public void averageGradeTest(){
                    Scanner input = new Scanner (System.in);
                    int grade;
                    int total;
                    int gradecounter;
                    double average;
               total = 0;
               gradecounter = 0;
               //promt user
             System.out.println("Enter Grade Number or -1 exit");
             grade = input.nextInt();
             // inserting entinel
             while (grade != -1){
                    total = total + grade;
                    gradecounter = gradecounter + 1;
                    System.out.println("Enter Grade Number or -1 exit\n");
                    grade = input.nextInt();
             }
     
             if (gradecounter != 0){
                 average = (double) total/gradecounter;
                 {
                 System.out.printf("The Class Average %.2f\n", average);
                 System.out.printf("The grade total is %2d\n", total, gradecounter);
             }
                 else
                 System.out.println("No grade Entered");
                }
              if (grade >= 40 && <= 90){
                 System.out.println("The number of " + gradecounter + " passed the Exam" );
             }
                 else 
                 System.out.println("The number of " + gradecounter + "failed the exams");
     
                }


  2. #2
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    Default Re: help me with my code

    Please use whole words, punctuation, capitals, etc. Those to whom English is not their native language find the abbreviations difficult to understand. Frankly, some of us to whom English is our native language find it difficult sometimes.

    The end (close brace) if this 'if' clause is missing:

    if ( gradecounter != 0 )

    Indenting your code correctly would have revealed this.

  3. #3
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    Default Re: help me with my code

    Am still getting illegal start of expression

    if (grade >= 40 && <= 90){
     
                 System.out.println("The number of " + gradecounter + " passed the Exam" );
             }
                 else {
                 System.out.println("The number of " + gradecounter + "failed the exams");
              }
     
     
     
     
                }
    }

  4. #4
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    Default Re: help me with my code

    Please copy the full text of the error message and paste it here. It has important info about the error.
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: help me with my code

    this is the code
    the if (grade >= 40 && <= 90) is underlined saying... illegal start of expression

     */
    package testing;
    import java.util.Scanner;
     
    /**
     *
     * @author Dokun
     */
    public class NewClassIfmethod {
        private String courseName;
            //starting a constructor 
     
            public NewClassIfmethod (String name){
            courseName = name;
            } 
            //endin the constructor
            //creating a new method setNewClassIfmethod 
            public void setNewClassIfmethod (String name){
                courseName = name;
            } 
            // creating a method to getNewClassIfmethod
            public String getNewClassIfmethod(){
                return courseName;
            }
            public void displayMessage(){
                System.out.printf("Welcome to the world of Java programing %s\n\n" , getNewClassIfmethod());
            }
     
                public void averageGradeTest(){
                    Scanner input = new Scanner (System.in);
                    int grade;
                    int total;
                    int gradecounter;
                    double average;
               total = 0;
               gradecounter = 0;
               //promt user
             System.out.println("Enter Grade Number or -1 exit");
             grade = input.nextInt();
             // inserting entinel
             while (grade != -1){
                    total = total + grade;
                    gradecounter = gradecounter + 1;
                    System.out.println("Enter Grade Number or -1 exit\n");
                    grade = input.nextInt();
             }
     
             if (gradecounter != 0){
                 average = (double) total/gradecounter;
                 System.out.printf("The Class Average %.2f\n", average);
                 System.out.printf("The grade total is %2d\n", total, gradecounter);
             }
                 else
                {
                 System.out.println("No grade Entered");
                }
             if (grade >= 40 && <= 90){
     
                 System.out.println("The number of " + gradecounter + " passed the Exam" );
             }
                 else {
                 System.out.println("The number of " + gradecounter + "failed the exams");
              }
     
     
     
     
                }
    }


    --- Update ---

    Thanks guys
    I have seen it that grade is missing from if (grade >= 40 && <= 90){

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