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-rw-r--r--19_functions2.zig23
1 files changed, 13 insertions, 10 deletions
diff --git a/19_functions2.zig b/19_functions2.zig
index 68cc67b..4d195a7 100644
--- a/19_functions2.zig
+++ b/19_functions2.zig
@@ -1,5 +1,11 @@
//
-// Now let's use a function that takes a parameter.
+// Now let's create a function that takes a parameter. Here's an
+// example that takes two parameters. As you can see, parameters
+// are declared just like an other types ("name": "type"):
+//
+// fn myFunction( number: u8, is_lucky: bool ) {
+// ...
+// }
//
const std = @import( "std" );
@@ -13,16 +19,13 @@ pub fn main() void {
}
//
-// 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 ":".
+// Please give this function the correct input parameter(s).
+// You'll need to figure out the parameter name and type that we're
+// expecting. The output type has already been specified for you.
//
fn twoToThe(???) u32 {
return std.math.pow(u32, 2, my_number);
+ // std.math.pow(type, a, b) takes a numeric type and two numbers
+ // of that type and returns "a to the power of b" as that same
+ // numeric type.
}