java - Error cannot be resolved to a variable -

error:

exception in thread "main" java.lang.error: unresolved compilation problem:  guess cannot resolved variable  @ hw2.demo.getuserguess(demo.java:80) @ hw2.demo.play(demo.java:23) @ hw2.demo.main(demo.java:15) 

code

private static char[] getuserguess() {      scanner input= new scanner(system.in);     char [] user = new char [array_size];     (int =0; i<array_size; i++){          system.out.println("plz enter color guess b g r y o p");         char c=input.next().charat(i);         user[i]=c;     //... 

i beginner @ java