/in/foo.cc: In function 'int main()':
/in/foo.cc:6:26: error: invalid operands of types 'int*' and 'int' to binary 'operator/'
    6 |         printf("%.9lf",&a/b);
      |                        ~~^~
      |                        |  |
      |                        |  int
      |                        int*