const std = @import("std");

const complexNumber = struct {
    real: i32,
    img: i32,
};


pub fn add(num1: *complexNumber, num2: complexNumber) void {
    num1.real = num1.real + num2.real;
    num1.img = num1.img + num2.img;
}


pub fn sub(num1: *complexNumber, num2: complexNumber) void {
    num1.real = num1.real - num2.real;
    num1.img = num1.img - num2.img;
}


pub fn mul(num1: *complexNumber, num2: complexNumber) void {
    num1.real = (num1.real * num2.real) - (num1.img * num2.img);
    num1.img = (num1.real * num2.img) + (num1.img * num2.real);  
}


pub fn print(writer: anytype, num: complexNumber) !void {
    try writer.print("({d} + {d}i)", .{num.real, num.img});
}


pub fn main() !void {
    const writer = std.io.getStdOut().writer();

    const num: complexNumber = complexNumber{.real = 1, .img = 2};
    try print(writer, num);
    try writer.print("\n", .{});

    var num1: complexNumber = complexNumber{.real = 1, .img = 2};
    const num2: complexNumber = complexNumber{.real = 2, .img = 3};

    try writer.print("Num1: ", .{});
    try print(writer, num1);
    try writer.print("\n", .{});

    try print(writer, num1);
    try writer.print(" + ", .{});
    try print(writer, num2);
    try writer.print(" = ", .{});
    add(&num1, num2);
    
    try print(writer, num1);
    try writer.print("\n", .{});
}