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(a), .b(b), .sum(w1), .carry(w2));
    half_adder h2(.a(w1), .b(cin), .sum(sum), .carry(w3));
    or o1 (cout,w3,w2);


endmodule