Compilare: user.cpp: In function ‘int GetMax(std::vector<int>&)’: user.cpp:13:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); ++i) ^ user.cpp: In function ‘int GetMin(std::vector<int>&)’: user.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); ++i) ^ user.cpp: In function ‘bool test(const string&)’: user.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:52:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); ++i) ^ user.cpp:61:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); ++i) ^ user.cpp:63:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < s.size(); ++j) ^ user.cpp:67:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k < s.size(); ++k) ^ user.cpp:71:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t = 0; t < s.size(); ++t) ^ user.cpp:114:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); ++i) ^