Compilare: user.cpp: In function ‘int main()’: user.cpp:13:17: warning: unused variable ‘n’ [-Wunused-variable] int a,b,i,j,n,nr1,nr2=Nmax,maxx=0,val1,val2; ^ user.cpp:39:10: warning: ‘val1’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<val1<<" "<<val2<<"\n"; ^ user.cpp:39:21: warning: ‘val2’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<val1<<" "<<val2<<"\n"; ^