add pointer

Author: ziteh

pointer/basic.zig

@@ -0,0 +1,9 @@
+const std = @import("std");
+
+pub fn main() void {
+    const value: u8 = 32;
+    const ptr = &value;
+    const deref = ptr.*;
+
+    std.debug.print("Pointer: {}, Deref: {}", .{ ptr, deref });
+}

pointer/modify.zig

@@ -0,0 +1,19 @@
+const std = @import("std");
+
+pub fn main() void {
+    var var_value: u8 = 32;
+    const const_ptr = &var_value;
+    std.debug.print("Value: {}\n", .{const_ptr.*});
+
+    const_ptr.* += 100; // Modify value (value is var)
+    std.debug.print("Value: {}\n", .{const_ptr.*});
+
+    std.debug.print("-----\n", .{});
+
+    const const_value: u8 = 32;
+    var var_ptr = &const_value;
+    std.debug.print("Value: {}\n", .{var_ptr.*});
+
+    var_ptr = &var_value; // Modify pointer (pointer is var)
+    std.debug.print("Value: {}\n", .{var_ptr.*});
+}

pointer/readme.md

@@ -0,0 +1,15 @@
+# Pointer
+
+```bash
+$ zig run basic.zig
+Pointer: u8@e5068a, Deref: 32
+```
+
+```bash
+$ zig run modify.zig
+Value: 32
+Value: 132
+-----
+Value: 32
+Value: 132
+```