Program that receives a series of notes needs to disregard an invalid entry

Question

Make a program that receives a series of student grades and then print them out. However, the program cannot accept notes greater than 100 or less than 0. If the user types a wrong note, they should be able to type again.

The code so far is like this:

public class notaMenorCem
{
  public static void main (String[]args)
  {
    int notaAluno [] = new int[5];
    for (int i=0; i<notaAluno.length; i++)
    {
      notaAluno[i] = Entrada.leiaInt ("Digite a nota: ");
      {
        if(notaAluno[i] <0 || notaAluno[i] >100)
        {
          System.out.println("Nota inválida, digite novamente:");
        }
      }
    }
    for (int i=0; i<notaAluno.length; i++)
    {
      System.out.println("Nota do aluno " +i+ ":"+notaAluno[i]);
    }
  }
}

The user receives the notice by entering a note greater than 100 but it is registered equal, what is missing?

Answer 1

Missed not doing the assignment if the validation fails, so I put a continue. And missed to turn the counter back if the item is not inserted, to keep the timing.

Missed validate when a entered value is not a number, if you do this test the application will break, but I will not fix it.

Other less relevant things were missing.

import java.util.Scanner;

public class Main {
    public static void main (String[] args) {
        Scanner sc = new Scanner(System.in);
        int notaAluno [] = new int[5];
        for (int i = 0; i < notaAluno.length; i++) {
            var nota = sc.nextInt();;
            if (nota < 0 || nota > 100) {
                System.out.println("Nota inválida, digite novamente:");
                i--;
                continue;
            }
            notaAluno[i] = nota;
        }
        for (int i = 0; i < notaAluno.length; i++) System.out.println("Nota do aluno " + i + ":" + notaAluno[i]);
    }
}

Behold working in the ideone. And in the repl it.. Also put on the Github for future reference.