Main.cc:3:6: error: 'cin' does not name a type
cin>>n;
^
Main.cc:4:6: error: expected unqualified-id before 'for'
for(int i=1;i<=n;i++){
^
Main.cc:4:18: error: 'i' does not name a type
for(int i=1;i<=n;i++){
^
Main.cc:4:23: error: 'i' does not name a type
for(int i=1;i<=n;i++){
^