Moved exercises to exercises because exercises

42_pointers4.zig

@@ -1,33 +0,0 @@
-//
-// Now let's use pointers to do something we haven't been
-// able to do before: pass a value by reference to a function!
-//
-const std = @import("std");
-
-pub fn main() void {
-    var num: u8 = 1;
-    var more_nums = [_]u8{ 1, 1, 1, 1 };
-
-    // Let's pass a reference to num to our function and print it:
-    makeFive(&num);
-    std.debug.print("num: {}, ", .{num});
-
-
-    // Now something interesting. Let's pass a reference to a
-    // specific array value:
-    makeFive(&more_nums[2]);
-
-    // And print the array:
-    std.debug.print("more_nums: ", .{});
-    for (more_nums) |n| {
-        std.debug.print("{} ", .{n});
-    }
-
-    std.debug.print("\n", .{});
-}
-
-// This function should take a reference to a u8 value and set it
-// to 5.
-fn makeFive(x: *u8) void {
-    ??? = 5; // fix me!
-}