Compilare: main.cpp: In function 'int main()': main.cpp:74:40: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] if (!cross(pts[i], pts[st], pts[dr]) < EPS) ^ main.cpp:103:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < up.size(); ++i) ~~^~~~~~~~~~~ main.cpp:104:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < dn.size(); ++j) { ~~^~~~~~~~~~~ main.cpp:112:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] f64 ei = (i + 1 == up.size() ? 1e18 : intersect(up[i], up[i + 1])); ~~~~~~^~~~~~~~~~~~ main.cpp:113:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] f64 ej = (j + 1 == dn.size() ? 1e18 : intersect(dn[j], dn[j + 1])); ~~~~~~^~~~~~~~~~~~ main.cpp:127:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < up.size(); ++i) { ~~^~~~~~~~~~~ main.cpp:129:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] f64 ei = (i + 1 == up.size() ? 1e18 : intersect(up[i], up[i + 1])); ~~~~~~^~~~~~~~~~~~ main.cpp:134:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < dn.size(); ++i) { ~~^~~~~~~~~~~ main.cpp:136:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] f64 ei = (i + 1 == dn.size() ? 1e18 : intersect(dn[i], dn[i + 1])); ~~~~~~^~~~~~~~~~~~ main.cpp: In function 'int cadran(const cpx&)': main.cpp:37:13: warning: control reaches end of non-void function [-Wreturn-type] return 3; } ^