64. Full Adder

How do you plan to solve it?

// Half Adder primitive
module half_adder (
    input  a, b,
    output sum, carry
);
    xor (sum,a,b);
    and (carry,a,b);// Write code here
    
endmodule

module full_adder_struct (
// Full Adder using 2 Half Adders
    input  a, b, cin,
    output sum, cout
);
    // Write code here
     wire sum1, carry1, carry2;
    half_adder ha1(.a(a), .b(b), .sum(sum1), .carry(carry1));

 
    half_adder ha2(.a(sum1), .b(cin), .sum(sum), .carry(carry2));


    or (cout, carry1, carry2);
endmodule