17. Binary to Gray Code Converter

How do you plan to solve it?

/*Write your code here*/
module bin2gray4(
    input wire [3:0] bin_in,
    output wire [3:0] gray_out
);

    genvar i;

    generate
        for(i = 3; i >= 0; i = i - 1)begin
            if(i == 3)begin
                assign gray_out[i] = bin_in[i];
            end
            else begin
                assign gray_out[i] = bin_in[i + 1] ^ bin_in[i];
            end
        end
    endgenerate
endmodule;