Counter with period 1000

Build a counter that counts from 0 to 999, inclusive, with a period of 1000 cycles. The reset input is synchronous, and should reset the counter to 0.

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module top_module (
    input clk,
    input reset,
    output [9:0] q);

    always @(posedge clk) begin
        if(reset) begin
            q <= 10'd0;
        end
        else if(q == 10'd999) begin
            q <= 10'd0;
        end
        else begin
            q <= q + 1'b1;
        end
    end

endmodule