foo.cc:6:12: error: '::main' must return 'int'
 void main ()
            ^
foo.cc: In function 'int main()':
foo.cc:8:3: error: '_int64' was not declared in this scope
   _int64  count=0;
   ^~~~~~
foo.cc:8:3: note: suggested alternative: 'u_int64_t'
   _int64  count=0;
   ^~~~~~
   u_int64_t
foo.cc:19:10: error: 'count' was not declared in this scope
       {  count++;
          ^~~~~
foo.cc:26:16: error: 'count' was not declared in this scope
  printf("%lld",count);
                ^~~~~

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