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
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
foo.cc:7:16: warning: format '%c' expects argument of type 'char*', but argument 4 has type 'int' [-Wformat=]
    7 |  scanf("%d,%d,%c", a, b, c);
      |               ~^         ~
      |                |         |
      |                char*     int
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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