Eroare de compilare: user.cpp: In function ‘int area(int, int, int)’: user.cpp:37:39: error: call of overloaded ‘abs(long long int)’ is ambiguous return abs(cross(v[i], v[j], v[k])); ^ user.cpp:37:39: note: candidates are: In file included from /usr/include/c++/4.8/cstdlib:72:0, from /usr/include/c++/4.8/ext/string_conversions.h:41, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/stdlib.h:771:12: note: int abs(int) extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur; ^ user.cpp:20:18: note: long long int abs(long long int) inline long long abs(const long long x){ ^ In file included from /usr/include/c++/4.8/ext/string_conversions.h:41:0, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/cstdlib:174:3: note: long long int std::abs(long long int) abs(long long __x) { return __builtin_llabs (__x); } ^ /usr/include/c++/4.8/cstdlib:166:3: note: long int std::abs(long int) abs(long __i) { return __builtin_labs(__i); } ^ user.cpp:38:1: warning: control reaches end of non-void function [-Wreturn-type] } ^