Main.cc:2:5: error: expected unqualified-id before 'for' for(int i=n;i<=m;i++){a+=i*i;}cout<<a<<endl; ^ Main.cc:2:17: error: 'i' does not name a type for(int i=n;i<=m;i++){a+=i*i;}cout<<a<<endl; ^ Main.cc:2:22: error: 'i' does not name a type for(int i=n;i<=m;i++){a+=i*i;}cout<<a<<endl; ^ Main.cc:2:35: error: 'cout' does not name a type for(int i=n;i<=m;i++){a+=i*i;}cout<<a<<endl; ^ Main.cc:3:5: error: expected unqualified-id before 'return' return 0; ^