Compilare: user.cpp: In function ‘int main()’: user.cpp:36:163: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if((a[1].x*a[i].y)+(a[i].x*a[j].y)+(a[1].y*a[j].x)-(a[j].x*a[i].y)-(a[j].y*a[1].x)-(a[1].y&a[i].x)==0&&(a[i].x>=a[j].x&&a[1].x>=a[j].x&&a[i].y>=a[j].y&&a[1].y>=a[j].y||a[i].x<=a[j].x&&a[1].x<=a[j].x&&a[i].y<=a[j].y&&a[1].y<=a[j].y)) ^