Main.cc: In function 'int main()': Main.cc:7:5: error: expected initializer before 'cin' cin>>s ^ Main.cc:8:15: error: 'j' was not declared in this scope for( int j=1;j<=s;j++) ^ Main.cc:8:18: error: 's' was not declared in this scope for( int j=1;j<=s;j++) ^