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 {carry,sum}=a+b;
    
endmodule

// Full Adder using 2 Half Adders
module full_adder_struct (
    input  a, b, cin,
    output sum, cout
);
    // Write code here
    wire s,c1,c2;
    half_adder h1(.a(a),.b(b),.sum(s),.carry(c1));
    half_adder h2(.a(s),.b(cin),.sum(sum),.carry(c2));
    or o1(cout,c1,c2);


endmodule