Compilare: main.cpp: In function 'int main()': main.cpp:24:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for (int index = 0; index < hashtable[hash_value].size(); index++) | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:31:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for (int index = 0; index < hashtable[hash_value].size() && found == 0;index++) | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~