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+//
+// Now that we've learned about arrays, we can talk about strings.
+//
+// We've already seen Zig string literals: "Hello world.\n"
+//
+// Zig stores strings as arrays of bytes.
+//
+//     const foo = "Hello";
+//
+// Is the same as:
+//
+//     const foo = [_]u8{ 'H', 'e', 'l', 'l', 'o' };
+//
+const std = @import("std");
+
+pub fn main() void {
+    const ziggy = "stardust";
+
+    // (Problem 1)
+    // Use array square bracket syntax to get the letter 'd' from
+    // the string "stardust" above.
+    const d: u8 = ziggy[???];
+
+    // (Problem 2)
+    // Use the array repeat '**' operator to make "ha ha ha ".
+    const laugh = "ha " ???;
+
+    // (Problem 3)
+    // Use the array concatenation '++' operator to make "Major Tom".
+    // (You'll need to add a space as well!)
+    const major = "Major";
+    const tom = "Tom";
+    const major_tom = major ??? tom;
+
+    // That's all the problems. Let's see our results:
+    std.debug.print("d={u} {s}{s}\n", .{ d, laugh, major_tom });
+    // Keen eyes will notice that we've put 'u' and 's' inside the '{}'
+    // placeholders in the format string above. This tells the
+    // print() function to format the values as a UTF-8 character and
+    // UTF-8 strings respectively. If we didn't do this, we'd see '100',
+    // which is the decimal number corresponding with the 'd' character
+    // in UTF-8. (And an error in the case of the strings.)
+    //
+    // While we're on this subject, 'c' (ASCII encoded character)
+    // would work in place for 'u' because the first 128 characters
+    // of UTF-8 are the same as ASCII!
+    //
+}