Compilare: user.cpp: In function ‘int main()’: user.cpp:31:16: warning: unused variable ‘j’ [-Wunused-variable] long u,v,i,j,k,rr=0,vr=1,nddf; nod* a,*b; float minn,total=0; ^ user.cpp:31:18: warning: unused variable ‘k’ [-Wunused-variable] long u,v,i,j,k,rr=0,vr=1,nddf; nod* a,*b; float minn,total=0; ^ user.cpp:51:21: warning: ‘u’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol[1][rr]=u; ^ user.cpp:55:21: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] b->cost=pinf; ^ user.cpp:52:21: warning: ‘v’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol[2][rr]=v; ^