Compilare: main.cpp: In function 'int main()': main.cpp:97:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < up.size(); ++i) ~~^~~~~~~~~~~ main.cpp:98:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < dn.size(); ++j) { ~~^~~~~~~~~~~ main.cpp:106:19: 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:107:19: 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:121:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < up.size(); ++i) { ~~^~~~~~~~~~~ main.cpp:123:19: 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:128:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < dn.size(); ++i) { ~~^~~~~~~~~~~ main.cpp:130:19: 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: At global scope: main.cpp:29:12: warning: 'int cadran(const cpx&)' defined but not used [-Wunused-function] static int cadran(const cpx &point) { ^~~~~~