From 08ec029f20381580ebe76ad8bd3feca2e5cd262a Mon Sep 17 00:00:00 2001
From: Dave Gauer <dave@ratfactor.com>
Date: Fri, 22 Jan 2021 17:42:03 -0500
Subject: Added ex 19,20 functions and pop quiz

---
 19_functions2.zig | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 19_functions2.zig

(limited to '19_functions2.zig')

diff --git a/19_functions2.zig b/19_functions2.zig
new file mode 100644
index 0000000..68cc67b
--- /dev/null
+++ b/19_functions2.zig
@@ -0,0 +1,28 @@
+//
+// Now let's use a function that takes a parameter.
+//
+const std = @import( "std" );
+
+pub fn main() void {
+    std.debug.print("Powers of two: {} {} {} {}\n", .{
+        twoToThe(1),
+        twoToThe(2),
+        twoToThe(3),
+        twoToThe(4),
+    });
+}
+
+//
+// Oops! We seem to have forgotten something here. Function
+// parameters look like this:
+//
+//   fn myFunction( number: u8, is_lucky: bool ) {
+//       ...
+//   }
+//
+// As you can see, we declare the type of the parameter, just
+// like we declare the types of variables, with a colon ":".
+//
+fn twoToThe(???) u32 {
+    return std.math.pow(u32, 2, my_number);
+}
-- 
cgit v1.2.3-ZIG