Added Ex. 4 arrays

1 files changed, 31 insertions, 0 deletions

diff --git a/04_arrays.zig b/04_arrays.zig
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index 0000000..2e3c208
--- /dev/null
+++ b/04_arrays.zig
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+//
+// Let's learn some array basics. Arrays literals are declared with:
+//
+//   [size]<type>{ values };
+//
+// When Zig can infer the size of the array, you can use '_' for the
+// size like so:
+//
+//   [_]<type>{ values };
+//
+const std = @import("std");
+
+pub fn main() void {
+    const some_primes = [_]u8{ 2, 3, 5, 7, 11, 13, 17, 19 };
+
+    // Array values are accessed using square bracket '[]' notation.
+    //
+    // (Note that when Zig can infer the type (u8 in this case) of a
+    // value, we don't have to manually specify it.)
+    //
+    const first = some_primes[0];
+
+    // Looks like we need to complete this expression:
+    const fourth = ???;
+
+    // Use '.len' to get the length of the array:
+    const length = some_primes.???;
+
+    std.debug.print("First: {}, Fourth: {}, Length: {}\n",
+        .{first, fourth, length});
+}