Compilare: main.cpp: In function 'int main()': main.cpp:109:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<coord>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | while (pos1 < toadd.size() && toadd[pos1].posx == index) { | ~~~~~^~~~~~~~~~~~~~ main.cpp:113:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<coord>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | while (pos2 < todec.size() && todec[pos2].posx == index) { | ~~~~~^~~~~~~~~~~~~~