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
    xor(sum,a,b);
    and(carry,a,b);

    
endmodule

// Full Adder using 2 Half Adders
module full_adder_struct (
    input  a, b, cin,
    output sum, cout
);
wire sum1,carry1,carry2;
    // Write code here
    half_adder h1(.a(a), .b(b), .sum(sum1), .carry(carry1));
    half_adder h2(.a(sum1), .b(cin), .sum(sum), .carry(carry2));

    or(cout,carry1,carry2);


endmodule