Added Ex 11-14: while loops

14_while4.zig

@@ -0,0 +1,24 @@
+//
+// Continue expressions do NOT execute when a while loop stops
+// because of a 'break' statement.
+//
+// Example:
+//
+//     while (condition) : (continue expression){
+//         if(other condition) break;
+//         ...
+//     }
+//
+const std = @import("std");
+
+pub fn main() void {
+    var n: u32 = 1;
+
+    // Oh dear! This while loop will go forever!?
+    while (true) : (n+=1) {
+        if(???) ???;
+    }
+
+    // Result: we want n=4
+    std.debug.print("n={}\n", .{n});
+}