Compilare: user.cpp: In function ‘int main()’: user.cpp:14:17: warning: variable ‘e3y’ set but not used [-Wunused-but-set-variable] int e1y,e2y,e3y,e4y; ^ user.cpp:53:37: warning: ‘e2y’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(x[j]>e1x && x[j]<e2x && y[j]>e2y && y[j]<e1y) ^ user.cpp:53:49: warning: ‘e1y’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(x[j]>e1x && x[j]<e2x && y[j]>e2y && y[j]<e1y) ^ user.cpp:45:33: warning: ‘e3x’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(p3 && p2 && x[e3x]==x[j] && y[e2y]==y[j]) ^ user.cpp:53:25: warning: ‘e2x’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(x[j]>e1x && x[j]<e2x && y[j]>e2y && y[j]<e1y) ^ user.cpp:53:13: warning: ‘e1x’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(x[j]>e1x && x[j]<e2x && y[j]>e2y && y[j]<e1y) ^