Compilare: main.cpp: In function 'int main()': main.cpp:67:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<char, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for (int k = 1; k < hehe.size(); k++) | ~~^~~~~~~~~~~~~ main.cpp:52:14: warning: 'ceva' may be used uninitialized in this function [-Wmaybe-uninitialized] 52 | char ceva; | ^~~~ main.cpp:87:42: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] 87 | cout << x << " " << y << "\n" << ceva; | ^~~~ main.cpp:87:22: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] 87 | cout << x << " " << y << "\n" << ceva; | ^~~