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 [3:0]gray_out;
        assign gray_out[3]=bin_in[3];
        assign gray_out[2]=bin_in[3]^bin_in[2];
        assign gray_out[1]=bin_in[2]^bin_in[1];
        assign gray_out[0]=bin_in[1]^bin_in[0];
endmodule