What does this Zig snippet output?

1const std = @import("std");
2const Rect = struct {
3    w: i32,
4    h: i32,
5    fn area(self: Rect) i32 {
6        return self.w * self.h;
7    }
8    fn perimeter(self: Rect) i32 {
9        return 2 * (self.w + self.h);
10    }
11};
12pub fn main() void {
13    const r = Rect{ .w = 5, .h = 3 };
14    std.debug.print("{d} {d}\n", .{ r.area(), r.perimeter() });
15}