What does this log?

1const std = @import("std");
2pub fn main() void {
3    const a: u8 = 200;
4    const b: u8 = a *| 2;
5    std.debug.print("{d}\n", .{b});
6    const c: u8 = 100;
7    const d: u8 = c *| 2;
8    std.debug.print("{d}\n", .{d});
9}