Compilare: user.cpp: In function ‘int determine_maxim()’: user.cpp:33:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0 ; i <= L1.size() - 1 ; i++ ) ^ user.cpp: In function ‘int determine_minim()’: user.cpp:42:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0 ; i <= L1.size() - 1 ; i++ ) ^ user.cpp: In function ‘int is_sort()’: user.cpp:50:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0 ; i <= L1.size() - 2 ; i++ ) ^ user.cpp: In function ‘int find_pos()’: user.cpp:58:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 1 ; i <= L1.size() - 2 ; i++ ) ^ user.cpp: In function ‘int main()’: user.cpp:65:9: warning: unused variable ‘maxloc’ [-Wunused-variable] int maxloc , minloc = 0 , nrerase = 0 ; ^ user.cpp:65:18: warning: unused variable ‘minloc’ [-Wunused-variable] int maxloc , minloc = 0 , nrerase = 0 ; ^ user.cpp:65:31: warning: unused variable ‘nrerase’ [-Wunused-variable] int maxloc , minloc = 0 , nrerase = 0 ; ^ user.cpp:66:9: warning: unused variable ‘next_to_erase’ [-Wunused-variable] int next_to_erase = 0 ; ^