Arduino: 1.6.5 (Windows 8.1), Platine: "Arduino/Genuino Uno"

C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10605 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard C:\Users\Ingo\AppData\Local\Temp\build3238216094161128126.tmp\flop.ino.cpp -o C:\Users\Ingo\AppData\Local\Temp\build3238216094161128126.tmp\flop.ino.cpp.o 

flop.ino.ino: In function 'void loop()':
flop.ino.ino:12:22: error: 'zustand' was not declared in this scope
flop.ino.ino:13:5: error: 'zustand' was not declared in this scope
'zustand' was not declared in this scope