Moved exercises to exercises because exercises

exercises/14_while4.zig

@@ -0,0 +1,26 @@
+//
+// You can force a loop to exit immediately with a "break" statement:
+//
+//     while (condition) : (continue expression){
+//
+//         if(other condition) break;
+//
+//     }
+//
+// Continue expressions do NOT execute when a while loop stops
+// because of a break!
+//
+const std = @import("std");
+
+pub fn main() void {
+    var n: u32 = 1;
+
+    // Oh dear! This while loop will go forever!?
+    // Please fix this so the print statement below gives the desired output.
+    while (true) : (n+=1) {
+        if(???) ???;
+    }
+
+    // Result: we want n=4
+    std.debug.print("n={}\n", .{n});
+}