\u5728 Zig \u7f16\u7a0b\u8bed\u8a00\u4e2d，\u51fd\u6570（Functions）\u662f\u7ec4\u7ec7\u548c\u91cd\u7528\u4ee3\u7801\u7684\u6838\u5fc3\u673a\u5236\u3002Zig \u7684\u51fd\u6570\u8bbe\u8ba1\u7b80\u6d01\u3001\u663e\u5f0f，\u5f3a\u8c03\u7c7b\u578b\u5b89\u5168\u3001\u6027\u80fd\u4f18\u5316\u548c\u9519\u8bef\u5904\u7406\u3002\u51fd\u6570\u652f\u6301\u7f16\u8bd1\u65f6\u6267\u884c（comptime）\u3001\u9519\u8bef\u8054\u5408（!T）\u3001\u53ef\u9009\u7c7b\u578b（?T）\u7b49\u7279\u6027，\u9002\u5408\u7cfb\u7edf\u7f16\u7a0b\u548c\u901a\u7528\u5f00\u53d1\u3002\u4ee5\u4e0b\u662f\u5bf9 Zig \u51fd\u6570\u7684\u4e2d\u6587\u8bb2\u89e3，\u6db5\u76d6\u5b9a\u4e49\u3001\u8c03\u7528\u3001\u53c2\u6570\u3001\u8fd4\u56de\u503c\u3001\u7279\u6b8a\u7279\u6027\u3001\u793a\u4f8b\u4ee3\u7801\u53ca\u6ce8\u610f\u4e8b\u9879，\u57fa\u4e8e Zig 0.14.1（\u622a\u81f3 2025 \u5e74 5 \u6708\u7684\u7a33\u5b9a\u7248），\u529b\u6c42\u7b80\u6d01\u6e05\u6670\u3002<\/p>\n
Zig \u7684\u51fd\u6570\u5177\u6709\u4ee5\u4e0b\u7279\u70b9：<\/p>\n
\u51fd\u6570\u4f7f\u7528 fn \u5173\u952e\u5b57\u5b9a\u4e49，\u9700\u6307\u5b9a\u53c2\u6570\u7c7b\u578b\u548c\u8fd4\u56de\u503c\u7c7b\u578b\u3002<\/p>\n
fn \u51fd\u6570\u540d(\u53c2\u6570\u540d: \u7c7b\u578b, …) \u8fd4\u56de\u7c7b\u578b {
\n \/\/ \u51fd\u6570\u4f53
\n}<\/p>\n
const std = @import("std");<\/p>\n
fn add(a: i32, b: i32) i32 {
\n return a + b;
\n}<\/p>\n
pub fn main() !void {
\n const result = add(5, 3);
\n const stdout = std.io.getStdOut().writer();
\n try stdout.print("\u548c: {}\\\\n", .{result}); \/\/ \u8f93\u51fa：\u548c: 8
\n}<\/p>\n
\u8bf4\u660e：<\/p>\n
Zig \u652f\u6301\u591a\u79cd\u53c2\u6570\u4f20\u9012\u65b9\u5f0f，\u53c2\u6570\u7c7b\u578b\u5fc5\u987b\u660e\u786e\u3002<\/p>\n
\u57fa\u672c\u7c7b\u578b（\u5982 i32\u3001f32）\u6309\u503c\u4f20\u9012，\u4fee\u6539\u4e0d\u5f71\u54cd\u539f\u503c：<\/p>\n
fn increment(x: i32) i32 {
\n var y = x;
\n y += 1;
\n return y;
\n}<\/p>\n
const x = 10;
\nconst y = increment(x); \/\/ x \u4e0d\u53d8，y = 11<\/p>\n
\u4f7f\u7528\u6307\u9488（*T \u6216 []T）\u4fee\u6539\u4f20\u5165\u6570\u636e：<\/p>\n
fn increment_ptr(x: *i32) void {
\n x.* += 1;
\n}<\/p>\n
var x: i32 = 10;
\nincrement_ptr(&x); \/\/ x = 11<\/p>\n
\u4f7f\u7528 comptime \u58f0\u660e\u7f16\u8bd1\u65f6\u53c2\u6570，\u7c7b\u578b\u6216\u503c\u5728\u7f16\u8bd1\u65f6\u786e\u5b9a：<\/p>\n
fn array_of_size(comptime size: usize) [size]u8 {
\n return [size]u8{0} ** size;
\n}<\/p>\n
const arr = array_of_size(3); \/\/ [0, 0, 0]<\/p>\n
\u8bf4\u660e：<\/p>\n
Zig \u4e0d\u76f4\u63a5\u652f\u6301\u53ef\u53d8\u53c2\u6570\u5217\u8868，\u4f46\u53ef\u901a\u8fc7\u5207\u7247（[]T）\u5b9e\u73b0：<\/p>\n
fn sum(numbers: []const i32) i32 {
\n var total: i32 = 0;
\n for (numbers) |n| {
\n total += n;
\n }
\n return total;
\n}<\/p>\n
const nums = [_]i32{1, 2, 3};
\nconst total = sum(&nums); \/\/ total = 6<\/p>\n
Zig \u51fd\u6570\u652f\u6301\u5355\u4e00\u8fd4\u56de\u503c\u6216\u9519\u8bef\u8054\u5408，\u652f\u6301\u7c7b\u578b\u63a8\u65ad\u3002<\/p>\n
\u76f4\u63a5\u8fd4\u56de\u6307\u5b9a\u7c7b\u578b：<\/p>\n
fn square(n: f32) f32 {
\n return n * n;
\n}<\/p>\n
\u4f7f\u7528 !T \u8868\u793a\u53ef\u80fd\u8fd4\u56de\u9519\u8bef，\u9700\u7ed3\u5408 try \u6216 catch：<\/p>\n
const std = @import("std");
\nconst MyError = error{InvalidInput};<\/p>\n
fn divide(a: f32, b: f32) MyError!f32 {
\n if (b == 0) return MyError.InvalidInput;
\n return a \/ b;
\n}<\/p>\n
pub fn main() !void {
\n const stdout = std.io.getStdOut().writer();
\n const result = divide(10.0, 2.0) catch |err| {
\n try stdout.print("\u9519\u8bef: {}\\\\n", .{err});
\n return;
\n };
\n try stdout.print("\u7ed3\u679c: {}\\\\n", .{result}); \/\/ \u8f93\u51fa：\u7ed3\u679c: 5.0
\n}<\/p>\n
\u4f7f\u7528 ?T \u8868\u793a\u53ef\u80fd\u8fd4\u56de null：<\/p>\n
fn find_first_even(numbers: []const i32) ?i32 {
\n for (numbers) |n| {
\n if (n % 2 == 0) return n;
\n }
\n return null;
\n}<\/p>\n
\u4f7f\u7528 pub \u4f7f\u51fd\u6570\u53ef\u88ab\u5176\u4ed6\u6a21\u5757\u8bbf\u95ee：<\/p>\n
pub fn greet(name: []const u8) []const u8 {
\n return "Hello, " ++ name;
\n}<\/p>\n
\u4f7f\u7528 inline \u5f3a\u5236\u5185\u8054，\u4f18\u5316\u6027\u80fd：<\/p>\n
inline fn add_inline(a: i32, b: i32) i32 {
\n return a + b;
\n}<\/p>\n
Zig \u652f\u6301\u9012\u5f52，\u4f46\u9700\u6ce8\u610f\u6808\u6ea2\u51fa：<\/p>\n
fn factorial(n: u32) u32 {
\n if (n <= 1) return 1;
\n return n * factorial(n – 1);
\n}<\/p>\n
\u4f7f\u7528 comptime \u786e\u4fdd\u51fd\u6570\u5728\u7f16\u8bd1\u65f6\u6267\u884c：<\/p>\n
fn compute_size(comptime n: usize) usize {
\n return n * 2;
\n}<\/p>\n
const size = comptime compute_size(5); \/\/ size = 10<\/p>\n
Zig \u7684\u51fd\u6570\u901a\u8fc7\u9519\u8bef\u8054\u5408（!T）\u663e\u5f0f\u5904\u7406\u9519\u8bef，\u5e38\u7528 try\u3001catch \u6216 errdefer\u3002<\/p>\n
const std = @import("std");
\nconst MyError = error{OutOfMemory};<\/p>\n
fn allocate_memory(allocator: std.mem.Allocator, size: usize) MyError![]u8 {
\n return try allocator.alloc(u8, size);
\n}<\/p>\n
pub fn main() !void {
\n const stdout = std.io.getStdOut().writer();
\n const allocator = std.heap.page_allocator;<\/p>\n
const memory = allocate_memory(allocator, 10) catch |err| {
\n try stdout.print("\u5206\u914d\u9519\u8bef: {}\\\\n", .{err});
\n return;
\n };
\n defer allocator.free(memory);<\/p>\n
try stdout.print("\u5206\u914d\u6210\u529f，\u957f\u5ea6: {}\\\\n", .{memory.len});
\n}<\/p>\n
\u8f93\u51fa：<\/p>\n
\u5206\u914d\u6210\u529f，\u957f\u5ea6: 10<\/p>\n
\u8bf4\u660e：<\/p>\n
\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u51fd\u6570\u7684\u591a\u79cd\u7279\u6027，\u5305\u62ec\u9519\u8bef\u5904\u7406\u3001\u6307\u9488\u548c\u7f16\u8bd1\u65f6\u53c2\u6570：<\/p>\n
const std = @import("std");
\nconst MyError = error{InvalidValue};<\/p>\n
const Point = struct {
\n x: f32,
\n y: f32,
\n};<\/p>\n
\/\/\/ \u8ba1\u7b97\u4e24\u70b9\u8ddd\u79bb
\nfn distance(p1: Point, p2: Point) f32 {
\n const dx = p1.x – p2.x;
\n const dy = p1.y – p2.y;
\n return @sqrt(dx * dx + dy * dy);
\n}<\/p>\n
\/\/\/ \u68c0\u67e5\u6b63\u6570\u5e76\u4fee\u6539
\nfn check_and_increment(num: *i32) MyError!void {
\n if (num.* <= 0) return MyError.InvalidValue;
\n num.* += 1;
\n}<\/p>\n
\/\/\/ \u7f16\u8bd1\u65f6\u751f\u6210\u6570\u7ec4
\nfn make_array(comptime size: usize, value: u8) [size]u8 {
\n return [size]u8{value} ** size;
\n}<\/p>\n
pub fn main() !void {
\n const stdout = std.io.getStdOut().writer();<\/p>\n
\/\/ \u8ba1\u7b97\u8ddd\u79bb
\n const p1 = Point{ .x = 0.0, .y = 0.0 };
\n const p2 = Point{ .x = 3.0, .y = 4.0 };
\n try stdout.print("\u8ddd\u79bb: {}\\\\n", .{distance(p1, p2)}); \/\/ 5.0<\/p>\n
\/\/ \u4fee\u6539\u503c
\n var num: i32 = 10;
\n try check_and_increment(&num);
\n try stdout.print("\u65b0\u503c: {}\\\\n", .{num}); \/\/ 11<\/p>\n
\/\/ \u7f16\u8bd1\u65f6\u6570\u7ec4
\n const arr = make_array(3, 42);
\n try stdout.print("\u6570\u7ec4: {any}\\\\n", .{arr}); \/\/ {42, 42, 42}
\n}<\/p>\n
\u8fd0\u884c：<\/p>\n
zig run example.zig<\/p>\n
\u8f93\u51fa：<\/p>\n
\u8ddd\u79bb: 5
\n\u65b0\u503c: 11
\n\u6570\u7ec4: {42, 42, 42}<\/p>\n
\u8bf4\u660e：<\/p>\n
Zig \u7684\u51fd\u6570\u8bbe\u8ba1\u7b80\u6d01\u9ad8\u6548：<\/p>\n
\u6ce8\u610f\u7c7b\u578b\u5b89\u5168\u3001\u9519\u8bef\u5904\u7406\u548c\u6027\u80fd\u4f18\u5316，\u7ed3\u5408 std.debug.print \u8c03\u8bd5\u3002Zig \u7684\u51fd\u6570\u7cfb\u7edf\u9002\u5408\u7cfb\u7edf\u7f16\u7a0b，\u517c\u987e\u6027\u80fd\u548c\u53ef\u8bfb\u6027\u3002\u63a8\u8350\u901a\u8fc7 Ziglings（https:\/\/ziglings.org\/）\u7ec3\u4e60\u51fd\u6570\u4f7f\u7528\u3002<\/p>\n
\u5982\u679c\u4f60\u9700\u8981\u66f4\u590d\u6742\u7684\u51fd\u6570\u793a\u4f8b（\u5982\u95ed\u5305\u6a21\u62df\u3001C \u4e92\u64cd\u4f5c）\u6216\u6709\u5176\u4ed6\u95ee\u9898，\u8bf7\u544a\u8bc9\u6211！<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb104\u6b21\u3002Zig \u51fd\u6570\u6838\u5fc3\u6458\u8981 Zig \u51fd\u6570\u4ee5 fn \u5b9a\u4e49\uff0c\u5f3a\u8c03\u663e\u5f0f\u7c7b\u578b\u4e0e\u9519\u8bef\u5904\u7406\u3002\u652f\u6301\u53c2\u6570\u6309\u503c\/\u6307\u9488\u4f20\u9012\u3001\u7f16\u8bd1\u65f6\u6267\u884c\uff08comptime\uff09\u548c\u9519\u8bef\u8054\u5408\uff08!T\uff09\u3002\u5173\u952e\u7279\u6027\uff1a \u7c7b\u578b\u5b89\u5168\uff1a\u9700\u663e\u5f0f\u58f0\u660e\u53c2\u6570\/\u8fd4\u56de\u7c7b\u578b\uff0c\u652f\u6301 inline \u4f18\u5316 \u9519\u8bef\u5904\u7406\uff1a\u901a\u8fc7 try\/catch \u5904\u7406 error{…} \u8054\u5408\u7c7b\u578b \u7279\u6b8a\u53c2\u6570\uff1acomptime \u5b9e\u73b0\u7f16\u8bd1\u65f6\u8ba1\u7b97\uff0c\u6307\u9488\u53c2\u6570\uff08*T\uff09\u4fee\u6539\u539f\u59cb\u503c \u4e92\u64cd\u4f5c\u6027\uff1aexport \u652f\u6301 C ABI \u8c03\u7528 \u9012\u5f52\u4e0e\u8c03\u8bd5\uff1a\u652f\u6301\u9012\u5f52\uff0c\u9700\u6ce8\u610f\u6808\u6ea2\u51fa\uff0c\u63a8\u8350 std.debug.print \u8c03\u8bd5 \u793a\u4f8b\uff1a fn a<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,6087,190,100],"topic":[],"class_list":["post-57866","post","type-post","status-publish","format-standard","hentry","category-server","tag-java","tag-zig","tag-190","tag-100"],"yoast_head":"\n