Problem loading code to Arduino Uno from MAC. Specific error message

Trying to load code to Arduino Uno board from a mac. Made it through several errors but stuck on this one:
core.a(main.cpp.o): In function main': /Users/blainekristo/Downloads/Arduino.app/Contents/Resources/Java/hardware/arduino/cores/arduino/main.cpp:40: undefined reference to setup'
/Users/blainekristo/Downloads/Arduino.app/Contents/Resources/Java/hardware/arduino/cores/arduino/main.cpp:43: undefined reference to `loop'

I am a new user and stumped. Any suggestions?

Post your sketch. Please use code tags(the </> button).