Compilare: main.cpp: In function 'int main()': main.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(i = 0; i < db.size(); i++){ | ~~^~~~~~~~~~~ main.cpp:32:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(j = 0; j < db.size(); j++){ | ~~^~~~~~~~~~~ main.cpp:49:21: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<medie>::size_type' {aka 'long unsigned int'} [-Wformat=] 49 | fprintf(fout, "%d\n", out.size()); | ~^ ~~~~~~~~~~ | | | | int std::vector<medie>::size_type {aka long unsigned int} | %ld main.cpp:50:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<medie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(i = 0; i < out.size(); i++){ | ~~^~~~~~~~~~~~