64. Full Adder

Define the functionality of the half adder and then instantiate it twice with different parameters. Pass those parameters to the output accordingly.

// Half Adder primitive
module half_adder (
    input  a, b,
    output sum, carry
);
    // Write code here
    wire [1:0] temp;
    assign temp = a+b;
    assign sum = temp[0];
    assign carry = temp[1];
endmodule

// Full Adder using 2 Half Adders
module full_adder_struct (
    input  a, b, cin,
    output sum, cout
);
    // Write code here
    wire sum1, carry1,carry2;
    half_adder h1(a,b,sum1,carry1);
    half_adder h2(cin,sum1,sum,carry2);
    assign cout = carry1|carry2;
endmodule