Create 13a. Variable visibility

Week 1: Types, condition clauses and loops/13a. Variable visibility

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+In Java, variables are only "visible" within the block in which they are defined. This means that a variable defined in a block following a loop or a condition clause, for example, cannot be referred to afterwards.
+In Java, the problem can be solved, for example, by DEFINING a variable BEFORE A BLOCK.
+
+
+import java.util.Scanner;
+
+public class Example {
+    public static void main(String[] args) {
+        Scanner reader  = new Scanner(System.in);
+
+        System.out.print("Give the first number: ");
+        int num1 = Integer.valueOf(reader.nextLine());
+        
+        System.out.print("Give the second number: ");
+        int num2 = Integer.valueOf(reader.nextLine());
+
+        //HERE
+        // defining a variable, but let's not assign a value to it yet
+        int largest;
+        
+        if (num1 > num2) {
+            largest = num1;
+        } else {
+            largest = num2;
+        }
+
+        System.out.println("Largest: " + largest);
+    }
+}
+13. Print the numbers 1...16 every third number
+
+
+
+