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 wire1,wire2,wire3;
    half_adder HA_1(.a(a), .b(b), .sum(wire1), .carry(wire2));
    half_adder HA_2(.a(wire1), .b(cin), .sum(sum), .carry(wire3));
    or or_1(cout,wire2,wire3);

endmodule