Compilare: user.cpp: In function ‘int find_smallest_number_greater_than(int)’: user.cpp:50:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<work_vector.size();i++) ^ user.cpp: In function ‘void find_maximal_ascending_chain(int)’: user.cpp:62:9: warning: unused variable ‘maximum’ [-Wunused-variable] int maximum=0; ^ user.cpp: In function ‘int binar_find_smallest_number_greater_than(int, int, int)’: user.cpp:46:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int find_smallest_number_greater_than(int)’: user.cpp:57:1: warning: control reaches end of non-void function [-Wreturn-type] } ^