module safe_div8 (
input [7:0] dividend,
input [7:0] divisor,
output [7:0] q,
output [7:0] r,
output div_by_zero
);
// TODO: implement with ternary (?:)
assign div_by_zero= (divisor==8'd0)? 1'b1: 1'b0;
assign q=(divisor==8'd0)? 8'd0: (dividend/ divisor);
assign r = (divisor==8'd0)?8'd0:(dividend% divisor);
endmodule