64. Full Adder

How do you plan to solve it?

// Half Adder primitive
module half_adder (
    input  a, b,
    output sum, carry
);
    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 s1, c1, c2;
    half_adder d0 (.a(a), .b(b), .sum(s1), .carry(c1));
    half_adder d1 (.a(s1), .b(cin), .sum(sum), .carry(c2));
    assign cout = c1 | c2;


endmodule