ziglings/19_functions2.zig
Dave Gauer adf5ddb27d Consistent instructions and examples
I started off with "hints" that required the poor student to piece
together the information from incomplete bits. A complete example is
like a picture that is worth 1000 words and far clearer.
2021-02-07 11:06:51 -05:00

31 lines
904 B
Zig

//
// 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" );
pub fn main() void {
std.debug.print("Powers of two: {} {} {} {}\n", .{
twoToThe(1),
twoToThe(2),
twoToThe(3),
twoToThe(4),
});
}
//
// 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.
}