64. Full Adder

How do you plan to solve it?

// Half Adder primitive
module half_adder (
    input  a, b,
    output sum, carry
);
    // Write code here
    assign sum= a^b;
    assign carry= a&b;
    
endmodule

// Full Adder using 2 Half Adders
module full_adder_struct (
    input  a, b, cin,
    output sum, cout
);
wire w1, w2, w3;
    // Write code here
    half_adder h1(a, b, w1, w2);
    half_adder h2(w1, cin, sum, w3);
    assign cout= w2|w3;


endmodule