Compilare: user.c: In function 'main': user.c:40: warning: unused variable 'step' user.c:40: warning: unused variable 'index' user.c:62:2: warning: no newline at end of file user.c: In function 'to_cut': user.c:8: warning: 'c_pos' may be used uninitialized in this function user.c:8: warning: 'val' may be used uninitialized in this function