Comparing Sensor Readings in NQC

[ZACH P.]

Hey guys, I'm prototyping some designs using the LEGO Mindstorms, and Im using Not Quite C . I'm new to this language, and have never worked with C before. That said, I need some help. What I need is tips/help on creating a program that reads the raw value of SENSOR_1, saves it, and then takes another reading and compares it to the origional to see if there was a change. Basically i need a program to monitor the sensor, and then start another task if there is a change in the reading. Any help would be much appreicated.
P.S. If you are going to post code, please include comments that explain it, as i am trying to learn this language. Thanks.