我正在用约束检查我对多态性的理解。我写了一个示例代码
class parent;
rand int unsigned a;
constraint a_c { a < 1000;}
function print();
$display("The randomized data is %d\n", a);
endfunction
endclass
class child extends parent;
constraint a_c { a > 50;}
endclass
module m;
child c = new();
in