Learn ZIG-WASM with Real Code Examples

# zig/demo/main.zig
const std = @import("std");

pub export fn main() void {
    std.debug.print("Hello, Zig WASM!\n", .{});
}

A basic Zig program compiled to WebAssembly that prints 'Hello, Zig WASM!' to the console.

# zig/demo/add.zig
const std = @import("std");

pub export fn add(a: i32, b: i32) void {
    std.debug.print("Sum: {d}\n", .{a + b});
}

Adds two integers and prints the result.

# zig/demo/multiply.zig
const std = @import("std");

pub export fn multiply(a: i32, b: i32) void {
    std.debug.print("Product: {d}\n", .{a * b});
}

Multiplies two integers and prints the result.

# zig/demo/fibonacci.zig
const std = @import("std");

fn fib(n: i32) i32 {
    if (n <= 1) return n;
    return fib(n - 1) + fib(n - 2);
}

pub export fn fibonacci(n: i32) void {
    std.debug.print("Fibonacci: {d}\n", .{fib(n)});
}

Calculates the nth Fibonacci number recursively and prints it.

# zig/demo/factorial.zig
const std = @import("std");

fn factorial(n: i32) i32 {
    if (n <= 1) return 1;
    return n * factorial(n - 1);
}

pub export fn factorial(n: i32) void {
    std.debug.print("Factorial: {d}\n", .{factorial(n)});
}

Calculates factorial recursively and prints the result.

# zig/demo/even.zig
const std = @import("std");

pub export fn isEven(n: i32) void {
    if (n % 2 == 0) {
        std.debug.print("Even\n", .{});
    } else {
        std.debug.print("Odd\n", .{});
    }
}

Checks if a number is even and prints the result.

# zig/demo/max.zig
const std = @import("std");

pub export fn max(a: i32, b: i32) void {
    if (a > b) {
        std.debug.print("Max: {d}\n", .{a});
    } else {
        std.debug.print("Max: {d}\n", .{b});
    }
}

Finds the maximum of two numbers and prints it.

# zig/demo/min.zig
const std = @import("std");

pub export fn min(a: i32, b: i32) void {
    if (a < b) {
        std.debug.print("Min: {d}\n", .{a});
    } else {
        std.debug.print("Min: {d}\n", .{b});
    }
}

Finds the minimum of two numbers and prints it.

# zig/demo/toggle.zig
const std = @import("std");

var state: bool = false;

pub export fn toggle() void {
    state = !state;
    if (state) {
        std.debug.print("ON\n", .{});
    } else {
        std.debug.print("OFF\n", .{});
    }
}

Toggles a boolean value and prints ON/OFF.

# zig/demo/array.zig
const std = @import("std");

pub export fn printArray(arr: [5]i32) void {
    for (arr) |val| {
        std.debug.print("{d} ", .{val});
    }
    std.debug.print("\n", .{});
}

Prints elements of an array.