Why does not see the variable [c]?

Question

Java

public static void main(String[] args) {
    int k, c, j, a, b, d;
    j = 10;
    b = 2000;
    k = 3000;
    d = 4000;
    a = 1;
    if (j < 100) {
      if (j < 90)
        a = b;
      if (k > j)
        c = k - j;
    } else
      c = d;
    System.out.println(a);
    System.out.println(c);
    System.out.println(k);
  }
}

print claim only on variable [c]:
The local variable c may not have been initialized
Why? How can I print it out?
The example is far-fetched, we are talking only about the visibility of variables, and so, I don’t understand how to display it in the console.

Answer 1

If j is less than 100 and k is less than j, nothing is assigned to c, so it may be uninitialized at the point of use.