Compilare: main.cpp: In function 'void sort_points()': main.cpp:62:23: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if (slopes[j] < 0 && slopes[i] > slopes[j] || slopes[j] > 0) ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:102:2: warning: 'dpos' may be used uninitialized in this function [-Wmaybe-uninitialized] if (lpos == -1) return 0; ^~ main.cpp:101:21: warning: 'lpos' may be used uninitialized in this function [-Wmaybe-uninitialized] lpos = (lpos != -1 ? lpos : dpos); ~~~~~~~~~~~~^~~~~~~~~~~~~~