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Thread: Not sure where I've messed up?

  1. #1
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    Default Not sure where I've messed up?

    I'm trying to do my final project for a class and I can't seem to get part of my code to work properly. The first loop only prompts for data the first time through; after that it skips straight into the nested loop. It's supposed to ask for 5 names and 5 scores for each name but I can only input 1 name.

    public class StudentAverageTestScore
    {
       public static void main(String[] asdf)
       {
          Scanner sc = new Scanner(System.in);
     
          String[] students = new String[5];
          int[][] scores = new int[5][5];
     
          for(int i=0; i<students.length; i++)
          {
             out.println("Enter the name of student " + (i+1));
             students[i] = sc.nextLine();
     
             for(int j=0; j<scores.length; j++)
             {
                out.println("Enter student's score for test " + (j+1));
                scores[i][j] = sc.nextInt();
                if(scores[i][j]<0 || scores[i][j]>100)
                {
                   out.println("Enter a valid test score.");
                   j--;
                }
             }
          }
       }
    }


  2. #2
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    Default Re: Not sure where I've messed up?

    sc.nextInt() leaves a linefeed in the input buffer which is then taken as input for the next sc.nextLine() call. Flush the buffer and throw it away with a sc.nextLine() call after the nested for loop.

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