answer.code: In function ‘int press_button()’:
answer.code:20:1: warning: no return statement in function returning non-void [-Wreturn-type]
   20 | }
      | ^
/tmp/ccrF4pBZ.o: In function `move_inside(int)':
answer.code:(.text+0x0): multiple definition of `move_inside(int)'
/tmp/cczMgCQT.o:implementer.cpp:(.text+0x0): first defined here
/tmp/ccrF4pBZ.o: In function `move_outside(int)':
answer.code:(.text+0x10): multiple definition of `move_outside(int)'
/tmp/cczMgCQT.o:implementer.cpp:(.text+0xd0): first defined here
/tmp/ccrF4pBZ.o: In function `press_button()':
answer.code:(.text.unlikely+0x0): multiple definition of `press_button()'
/tmp/cczMgCQT.o:implementer.cpp:(.text+0x1a0): first defined here
collect2: error: ld returned 1 exit status