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