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
);
    // Write code here
    wire [2:0]w;
    half_adder h1(.a(a),.b(b),.sum(w[0]),.carry(w[1]));
     half_adder h2(.a(w[0]),.b(cin),.sum(sum),.carry(w[2]));
    assign cout=w[1]|w[2];

endmodule