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愚痴をこぼしても一人










@3/23(日)
東京オフ主催


![commit 2a8d6af7ba9dcea5f13e306f2d032f3f344950af
Author: Andrew Kelley <andrew@ziglang.org>
Date: Fri Jan 8 04:08:42 2016 -0700
fix guess number example. now it works
diff --git a/example/guess_number/main.zig b/example/guess_number/main.zig
index 1dbe000163..52578d0a00 100644
--- a/example/guess_number/main.zig
+++ b/example/guess_number/main.zig
@@ -1,53 +1,49 @@
export executable "guess_number";
use "std.zig";
use "rand.zig";
// TODO don't duplicate these; implement pub const
const stdout_fileno : isize = 1;
const stderr_fileno : isize = 2;
pub fn main(argc: isize, argv: &&u8, env: &&u8) -> i32 {
print_str("Welcome to the Guess Number Game in Zig.\n");
var seed : u32;
var err : isize;
if ({err = os_get_random_bytes(&seed as &u8, #sizeof(u32)); err != #sizeof(u32)}) {
// TODO full error message
fprint_str(stderr_fileno, "unable to get random bytes\n");
return 1;
}
var rand : Rand;
rand.init(seed);
const answer = rand.range_u64(0, 100) + 1;
- print_str("Answer: ");
- print_u64(answer);
- print_str("\n");
-
while (true) {
print_str("\nGuess a number between 1 and 100: ");
var line_buf : [20]u8;
var line_len : usize;
// TODO fix this awkward error handling
if (readline(line_buf, &line_len) || line_len == line_buf.len) {
// TODO full error message
fprint_str(stderr_fileno, "unable to read input\n");](https://files.mastodon.social/media_attachments/files/115/828/107/971/614/419/original/cc14c4b25c1bbe22.png)
![const std = @import("std");
pub fn main(init: std.process.Init) !void {
var stdout_writer = std.Io.File.stdout().writerStreaming(init.io, &.{});
const out = &stdout_writer.interface;
var line_buffer: [20]u8 = undefined;
var stdin_reader: std.Io.File.Reader = .init(.stdin(), init.io, &line_buffer);
const in = &stdin_reader.interface;
try out.writeAll("Welcome to the Guess Number Game in Zig.\n");
const answer = std.crypto.random.intRangeLessThan(u8, 0, 100) + 1;
while (true) {
try out.writeAll("\nGuess a number between 1 and 100: ");
const untrimmed_line = in.takeSentinel('\n') catch |err| switch (err) {
error.StreamTooLong => {
try out.writeAll("Line too long.\n");
_ = try in.discardDelimiterInclusive('\n');
continue;
},
else => |e| return e,
};
const line = std.mem.trimEnd(u8, untrimmed_line, "\r\n");
const guess = std.fmt.parseUnsigned(u8, line, 10) catch {
try out.writeAll("Invalid number.\n");
continue;
};
if (guess > answer) {
try out.writeAll("Guess lower.\n");
} else if (guess < answer) {
try out.writeAll("Guess higher.\n");
} else {
try out.writeAll("You win!\n");
return;
}
}
}](https://files.mastodon.social/media_attachments/files/115/828/111/154/468/106/original/0e9c3b388db7ab2d.png)











