9d4eaf1e07
std.io.FileInStream -> std.os.File.InStream std.io.FileInStream.init(file) -> file.inStream() std.io.FileOutStream -> std.os.File.OutStream std.io.FileOutStream.init(file) -> file.outStream() remove a lot of error code possibilities from os functions std.event.net.socketRead -> std.event.net.read std.event.net.socketWrite -> std.event.net.write add std.event.net.readv add std.event.net.writev add std.event.net.readvPosix add std.event.net.writevPosix add std.event.net.OutStream add std.event.net.InStream add std.event.io.InStream add std.event.io.OutStream
49 lines
1.5 KiB
Zig
49 lines
1.5 KiB
Zig
const builtin = @import("builtin");
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const std = @import("std");
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const io = std.io;
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const fmt = std.fmt;
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const os = std.os;
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pub fn main() !void {
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var stdout_file = try io.getStdOut();
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const stdout = &stdout_file.outStream().stream;
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try stdout.print("Welcome to the Guess Number Game in Zig.\n");
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var seed_bytes: [@sizeOf(u64)]u8 = undefined;
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os.getRandomBytes(seed_bytes[0..]) catch |err| {
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std.debug.warn("unable to seed random number generator: {}", err);
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return err;
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};
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const seed = std.mem.readInt(seed_bytes, u64, builtin.Endian.Big);
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var prng = std.rand.DefaultPrng.init(seed);
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const answer = prng.random.range(u8, 0, 100) + 1;
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while (true) {
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try stdout.print("\nGuess a number between 1 and 100: ");
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var line_buf: [20]u8 = undefined;
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const line_len = io.readLine(line_buf[0..]) catch |err| switch (err) {
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error.InputTooLong => {
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try stdout.print("Input too long.\n");
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continue;
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},
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error.EndOfFile, error.StdInUnavailable => return err,
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};
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const guess = fmt.parseUnsigned(u8, line_buf[0..line_len], 10) catch {
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try stdout.print("Invalid number.\n");
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continue;
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};
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if (guess > answer) {
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try stdout.print("Guess lower.\n");
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} else if (guess < answer) {
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try stdout.print("Guess higher.\n");
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} else {
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try stdout.print("You win!\n");
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return;
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}
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}
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}
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