Compilare: user.cpp: In function ‘int main()’: user.cpp:14:16: warning: unused variable ‘d’ [-Wunused-variable] int v[6],k,d=0; ^ user.cpp:48:14: warning: unused variable ‘l1’ [-Wunused-variable] int nr=0,l1,l2,c1,c2,x1,x2,y1,y2,maxim=0,arie,l; ^ user.cpp:48:17: warning: unused variable ‘l2’ [-Wunused-variable] int nr=0,l1,l2,c1,c2,x1,x2,y1,y2,maxim=0,arie,l; ^ user.cpp:48:20: warning: unused variable ‘c1’ [-Wunused-variable] int nr=0,l1,l2,c1,c2,x1,x2,y1,y2,maxim=0,arie,l; ^ user.cpp:48:23: warning: unused variable ‘c2’ [-Wunused-variable] int nr=0,l1,l2,c1,c2,x1,x2,y1,y2,maxim=0,arie,l; ^ user.cpp:106:16: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<v1[j]<<" "<<v2[j]<<" "<<v3[j]-1<<" "<<v4[j]-1; ^