Main.cc:3:5: error: 'cin' does not name a type cin>>n; ^ Main.cc:4:5: error: expected unqualified-id before 'for' for(int a=0;a<=n/5;a++){ ^ Main.cc:4:17: error: 'a' does not name a type for(int a=0;a<=n/5;a++){ ^ Main.cc:4:24: error: 'a' does not name a type for(int a=0;a<=n/5;a++){ ^ Main.cc:15:5: error: expected unqualified-id before 'if' if(flag==0){ ^ Main.cc:18:1: error: expected declaration before '}' token } ^