Main.cc: In function 'int main()': Main.cc:8:5: error: expected ';' before 'for' for(i=n;i<=m;i++) ^ Main.cc:8:14: warning: statement has no effect [-Wunused-value] for(i=n;i<=m;i++) ^ Main.cc:8:21: error: expected ';' before ')' token for(i=n;i<=m;i++) ^