foo.cc: In function 'int main()':
foo.cc:7:10: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'double*' [-Wformat=]
    7 |  scanf("%d,%d,%c", &a, &b, &c);
      |         ~^         ~~
      |          |         |
      |          int*      double*
      |         %le
foo.cc:7:13: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'double*' [-Wformat=]
    7 |  scanf("%d,%d,%c", &a, &b, &c);
      |            ~^          ~~
      |             |          |
      |             int*       double*
      |            %le
foo.cc:7:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    7 |  scanf("%d,%d,%c", &a, &b, &c);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

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