/in/foo.cc:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include,bits/stdc++.h>
         ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:6:2: error: 'cin' was not declared in this scope
  cin>>a;
  ^~~
/in/foo.cc:7:2: error: 'cout' was not declared in this scope
  cout<<int(a);
  ^~~~