Compilare: user.cpp: In function ‘void DeleteData(std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >&, std::pair<int, int>, int, int)’: user.cpp:65: warning: unused variable ‘nr’ user.cpp:65: warning: unused variable ‘x’ user.cpp:65: warning: unused variable ‘y’ user.cpp: In function ‘int main()’: user.cpp:151: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:153: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int GetInsertloc(std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >&, std::pair<int, int>, int, int)’: user.cpp:30: warning: control reaches end of non-void function