64. Full Adder

How do you plan to solve it?

module half_adder (
    input  a, b,
    output sum, carry
);
    assign sum = a ^ b;    // Use XOR for Sum
    assign carry = a & b;  // Use AND for Carry
endmodule
module full_adder_struct (
    input  a, b, cin,
    output sum, cout
);
    wire s1, c1, c2;

    // Corrected mapping: half_adder instance_name (input1, input2, output_sum, output_carry)
    half_adder g1 (
        .a(a), 
        .b(b), 
        .sum(s1), 
        .carry(c1)
    );

    half_adder g2 (
        .a(s1), 
        .b(cin), 
        .sum(sum), 
        .carry(c2)
    );

    assign cout = c1 | c2;

endmodule