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];
assign gray_out=bin_in^(bin_in>>1);
endmodule