/in/foo.cc: In function 'int e(long int*, long int)':
/in/foo.cc:11:4: error: invalid operands of types 'long int*' and 'long int' to binary 'operator/'
 a/=p;
    ^
/in/foo.cc:11:4: error:   in evaluation of 'operator/=(long int*, long int)'
/in/foo.cc: At global scope:
/in/foo.cc:33:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^