foo.cc: In function 'int main()':
foo.cc:18:12: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   18 |  int h = d % 10;
      |          ~ ^ ~~
      |          |   |
      |          |   int
      |          double
foo.cc:19:10: error: 'f' was not declared in this scope
   19 |  cout << f;
      |          ^
foo.cc:18:6: warning: unused variable 'h' [-Wunused-variable]
   18 |  int h = d % 10;
      |      ^

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