
`celldefine

module test;
`ifdef first_block
    `ifndef second_nest
        initial $display("first_block is defined");
    `else
        initial $display("first_block and second_nest defined");
    `endif
`elsif second_block
    initial $display("second_block defined, first_block is not");
`else
    `ifndef last_result
        initial $display("first_block, second_block, last_result not .");
    `elsif real_last
        initial $display("first_block, second_block not defined,
        last_result and real_last defined.");
    `else
        initial $display("Only last_result defined!");
    `endif
`endif
endmodule

`endcelldefine