Moved exercises to exercises because exercises

39_pointers.zig

@@ -1,36 +0,0 @@
-//
-// Check this out:
-//
-//     var foo: u8 = 5;      // foo is 5
-//     var bar: *u8 = &foo;  // bar is a pointer
-// 
-// What is a pointer? It's a reference to a value. In this example
-// bar is a reference to the memory space that current contains the
-// value 5.
-//
-// A cheatsheet given the above declarations:
-//
-//     u8         the type of a u8 value
-//     foo        the value 5
-//     *u8        the type of a pointer to a u8 value
-//     &foo       a reference to foo
-//     bar        a pointer to the value at foo
-//     bar.*      the value 5 (the dereferenced value "at" bar)
-//     
-// We'll see why pointers are useful in a moment. For now, see if you
-// can make this example work!
-//
-const std = @import("std");
-
-pub fn main() void {
-    var num1: u8 = 5;
-    var num1_pointer: *u8 = &num1;
-
-    var num2: u8 = undefined;
-
-    // Please make num2 equal 5 using num1_pointer!
-    // (See the "cheatsheet" above for ideas.)
-    num2 = ???;
-
-    std.debug.print("num1: {}, num2: {}\n", .{num1, num2});
-}