// t_table4.v

`timescale 1ns/1ns // set time unit and time lsb
module t_table4;
  reg a, b, c, d;
  integer i, j, k;
  reg val[1:2];
  initial
    begin
      val[1] = 0;
      val[2] = 1;
      $display("a b c | d = ~a*b*~c");
      $display("------+---");
       
      for(i=1; i<=2; i=i+1)
      begin
        a = val[i];
        for(j=1; j<=2; j=j+1)
        begin
          b = val[j];
	  for(k=1; k<=2; k=k+1)
	  begin
            c = val[k];   

	    d = ~a*b*~c;  // equation for truth table
            $display("%b %b %b | %b", a, b, c, d);
	  end
        end
      end
    end
endmodule