17. Binary to Gray Code Converter

How do you plan to solve it?

/*Write your code here*/

module bin2gray4(bin_in,gray_out);

input [3:0]bin_in;
output reg[3:0]gray_out;

integer i;

always@(*)begin
    gray_out[3]=bin_in[3];
    for(i=2;i>=0;i=i-1)begin
        gray_out[i]=bin_in[i+1]^bin_in[i];
    end
end


endmodule