Main.cc:4:7: error: expected ')' before ';' token
int a;
^
Main.cc:3:5: warning: 'int main(int)' takes only zero or two arguments [-Wmain]
int main(
^
Main.cc:5:5: error: 'cin' does not name a type
cin>>a;
^
Main.cc:6:5: error: 'cout' does not name a type
cout<