Fork join to generate clocks

SystemVerilog
,
3

In reply to svq:

I believe they should have written this as

initial begin
    //code to calculate periods.
    fork
    forever #(main_period) if (reset_n==0) clka = ~clka;
    forever #(even_period) if (reset_n==0) clkb = ~clkb;
    forever #(odd_period)  if (reset_n==0) clkc  = ~clkc; 
    join 
    end
   end