`timescale 1ns/1ps

module tb_full_adder;

reg a;
reg b;
reg cin;
wire sum;
wire cout;

full_adder uut (
    .a(a),
    .b(b),
    .cin(cin),
    .sum(sum),
    .cout(cout)
);

initial begin
    $display("a b cin | sum cout");
    $display("-------------------");

    a=0; b=0; cin=0; #10;
    $display("%b %b  %b  |  %b   %b", a, b, cin, sum, cout);

    a=0; b=0; cin=1; #10;
    $display("%b %b  %b  |  %b   %b", a, b, cin, sum, cout);

    a=0; b=1; cin=0; #10;
    $display("%b %b  %b  |  %b   %b", a, b, cin, sum, cout);

    a=0; b=1; cin=1; #10;
    $display("%b %b  %b  |  %b   %b", a, b, cin, sum, cout);

    a=1; b=0; cin=0; #10;
    $display("%b %b  %b  |  %b   %b", a, b, cin, sum, cout);

    a=1; b=0; cin=1; #10;
    $display("%b %b  %b  |  %b   %b", a, b, cin, sum, cout);

    a=1; b=1; cin=0; #10;
    $display("%b %b  %b  |  %b   %b", a, b, cin, sum, cout);

    a=1; b=1; cin=1; #10;
    $display("%b %b  %b  |  %b   %b", a, b, cin, sum, cout);

    $finish;
end

endmodule