Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:97:9: warning: unused variable ‘black’ [-Wunused-variable] int black = 1; ^~~~~ user.cpp:98:9: warning: unused variable ‘st’ [-Wunused-variable] int st = 1; ^~ user.cpp:99:9: warning: unused variable ‘cur’ [-Wunused-variable] int cur = 0; ^~~ user.cpp:114:12: error: ‘black’ was not declared in this scope out << black; ^~~~~ user.cpp: At global scope: user.cpp:117:3: error: expected unqualified-id before ‘return’ return 0; ^~~~~~ user.cpp:118:1: error: expected declaration before ‘}’ token } ^ user.cpp: In function ‘bool cmp(event, event)’: user.cpp:66:1: warning: control reaches end of non-void function [-Wreturn-type] } ^