module D_FF_Array #(parameter WIDTH = 1)
(q, d, clk, reset);

input clk, reset;
input [WIDTH - 1:0] d;
output reg [WIDTH - 1:0] q;

always @(posedge clk or posedge reset) begin
    if(reset)
        q <= 0;
    else
        q <= d;
end
endmodule