Adding exs 27-32

1 files changed, 42 insertions, 0 deletions

diff --git a/31_switch2.zig b/31_switch2.zig
new file mode 100644
index 0000000..138b809
--- /dev/null
+++ b/31_switch2.zig
@@ -0,0 +1,42 @@
+//
+// What's really nice is that you can use a switch statement as an
+// expression to return a value.
+//
+//     var a = switch (x) {
+//         1 => 9,
+//         2 => 16,
+//         3 => 7,
+//         ...
+//     }
+//
+const std = @import("std");
+
+pub fn main() void {
+    const lang_chars = [_]u8{ 26, 9, 7, 42 };
+
+    for (lang_chars) |c| {
+        var real_char: u8 = switch (c) {
+            1  => 'A',
+            2  => 'B',
+            3  => 'C',
+            4  => 'D',
+            5  => 'E',
+            6  => 'F',
+            7  => 'G',
+            8  => 'H',
+            9  => 'I',
+            10 => 'J',
+            // ...
+            25 => 'Y',
+            26 => 'Z',
+            // As in the last exercise, please add the "else" clause
+            // and this time, have it return an exclamation mark "!".
+        };
+
+        std.debug.print("{c}", .{real_char});
+        // Note: "{c}" forces print() to display the value as a character.
+        // Can you guess what happens if you remove the "c"? Try it!
+    }
+
+    std.debug.print("\n", .{});
+}