I have some numbers,from a sensor,have been saved in a txt document. Now I want to load these numbers as "value" but not "string".Since it is an analog signal sensor, the value is not accurate. So I will set a data range to judge weather the sensor has been active. As you know,the "string" can not be compared the size.
I`m a Chinese student.English is not very well. Hope you can understand what I said. Thanks.