Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:19:13: warning: variable ‘val’ set but not used [-Wunused-but-set-variable] int nod,val,i; ^ user.cpp: In function ‘bool ver(int)’: user.cpp:45:13: warning: variable ‘val’ set but not used [-Wunused-but-set-variable] int nod,val,i; ^ user.cpp: In function ‘int main()’: user.cpp:72:20: warning: unused variable ‘j’ [-Wunused-variable] register int i,j,x,y,t,c,p,u,mid; ^