Problem with arduino quadricopter code

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hi :)

it's first time write here loocking help...i've started few weeks arduino...

i'm trying realize code arduino quadricopter...i realized library i've encountered few problem...

here console errors:

drone:6: error: new types may not defined in return type
drone.ino:6: note: (perhaps semicolon missing after definition of 'quadricopter')
drone:6: error: 2 or more data types in declaration of 'setup'
drone.ino: in function 'void loop()':
drone:21: error: switch quantity not integer

except last error (the 1 on line 21) can't understand wrong...

thanks can give me, , sorry english error can have made...

can suggest delete 1 of duplicate threads on subject.


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