Eroare de compilare: main.cpp: In function 'int main()': main.cpp:70:48: error: too few arguments to function 'bool cmp(std::pair<float, float>, std::pair<float, float>)' sort(points.begin() + 1, points.end(), cmp()); ^ main.cpp:28:6: note: declared here bool cmp(pair<float, float> p1, pair<float, float> p2) { ^~~ main.cpp:78:43: error: no match for 'operator[]' (operand types are 'std::stack<std::pair<float, float> >' and 'std::stack<std::pair<float, float> >::size_type {aka long unsigned int}') while (st.size() >= 2 && orient(st[st.size() - 2], st[st.size() - 1], points[i])) { ^ main.cpp:78:62: error: no match for 'operator[]' (operand types are 'std::stack<std::pair<float, float> >' and 'std::stack<std::pair<float, float> >::size_type {aka long unsigned int}') while (st.size() >= 2 && orient(st[st.size() - 2], st[st.size() - 1], points[i])) { ^ main.cpp:83:5: error: expected ';' before '}' token } ^ main.cpp:88:39: error: no matching function for call to 'begin(std::stack<std::pair<float, float> >&)' for (pair<float, float> it1 : st) { ^~ In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:95:0, from main.cpp:1: /usr/include/c++/6/valarray:1206:5: note: candidate: template<class _Tp> const _Tp* std::begin(const std::valarray<_Tp>&) begin(const valarray<_Tp>& __va) ^~~~~ /usr/include/c++/6/valarray:1206:5: note: template argument deduction/substitution failed: main.cpp:88:39: note: 'std::stack<std::pair<float, float> >' is not derived from 'const std::valarray<_Tp>' for (pair<float, float> it1 : st) { ^~ In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:95:0, from main.cpp:1: /usr/include/c++/6/valarray:1196:5: note: candidate: template<class _Tp> _Tp* std::begin(std::valarray<_Tp>&) begin(valarray<_Tp>& __va) ^~~~~ /usr/include/c++/6/valarray:1196:5: note: template argument deduction/substitution failed: main.cpp:88:39: note: 'std::stack<std::pair<float, float> >' is not derived from 'std::valarray<_Tp>' for (pair<float, float> it1 : st) { ^~ In file included from /usr/include/c++/6/string:51:0, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, from /usr/include/c++/6/ios:42, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/sstream:38, from /usr/include/c++/6/complex:45, from /usr/include/c++/6/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:52, from main.cpp:1: /usr/include/c++/6/bits/range_access.h:87:5: note: candidate: template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::begin(_Tp (&)[_Nm]) begin(_Tp (&__arr)[_Nm]) ^~~~~ Non zero exit status: 1