17. Binary to Gray Code Converter

How do you plan to solve it?

/*Write your code here*/
module bin2gray4(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