My project is a wireless project between two arduinos and I want to be able to change the value of variables on one of the arduinos by sending something like var1=10 from the other. Thats ok as long as var1 exists on the destination arduino, but i would like to first check if it really exists. Is there a way to check if var1 exists before I atempt to change its value. It would also be nice to know what type of variable var1 is(int,char,str,...)
Can anyone help please?