code error

[alira725]

با سلام دوستان این کد خطا واسه چیه؟


C:\Users\rava\AppData\Local\Temp\build690922162619 7811458.tmp/core.a(main.cpp.o): In function `main':
E:\Program Files\Arduino\hardware\arduino\avr\cores\arduino/main.cpp:30: undefined reference to `setup'
E:\Program Files\Arduino\hardware\arduino\avr\cores\arduino/main.cpp:33: undefined reference to `loop'