// 4bit_fulladder_v2.v

`timescale 1ns / 1ps
`default_nettype none

module fourbit_fulladder_v2
(
    input  wire       cin,
    input  wire [3:0] a,
    input  wire [3:0] b,
    output wire [3:0] sum,
    output wire       cout
);
    assign {cout,sum} = a+b+cin;
endmodule