/in/foo.cc: In function 'int main()':
/in/foo.cc:6:2: error: expected ';' before 'int'
  int a=0;
  ^~~
/in/foo.cc:7:8: error: 'a' was not declared in this scope
  cin>> a;
        ^
/in/foo.cc:9:2: error: expected ';' before 'cout'
  cout<<a+1;
  ^~~~