Compilare: main.cpp: In function 'int main()': main.cpp:58:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<double>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for (i = 0; i < PP.size(); i++) | ~~^~~~~~~~~~~ main.cpp:92:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<double>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | if (ok < PP.size() - 1 && PP[ok+1] == x) dubl = 1; | ~~~^~~~~~~~~~~~~~~ main.cpp:38:39: warning: unused variable 't' [-Wunused-variable] 38 | double x, y, x2, y2, a, b, c, t; | ^