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
);
    wire w1,w2,w3;//w1-sum,w2-carry
    half_adder U1(a,b,w1,w2);
    half_adder U2(w1,cin,sum,w3);
    or(cout,w2,w3);
    // Write code here


endmodule