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
    xor(sum,a,b);
    and(carry,a,b);
    
endmodule

// Full Adder using 2 Half Adders
module full_adder_struct (
    input  a, b, cin,
    output sum, cout
);
    // Write code here
    wire s1, s2, s3;

    half_adder ha1(
        .a(a) , 
        .b(b) , 
        .sum(s1) , 
        .carry(s2)      
    );

    half_adder ha2(
        .a(s1) , 
        .b(cin) , 
        .sum(sum) , 
        .carry(s3)      
    );

    or(cout, s2, s3);

    









endmodule