foo.cc: In function 'int main()':
foo.cc:5:10: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'int' [-Wformat=]
    5 |  scanf("%d,%d",a,b);
      |         ~^     ~
      |          |     |
      |          int*  int
foo.cc:5:13: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'int' [-Wformat=]
    5 |  scanf("%d,%d",a,b);
      |            ~^    ~
      |             |    |
      |             int* int
foo.cc:5:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    5 |  scanf("%d,%d",a,b);
      |  ~~~~~^~~~~~~~~~~~~
foo.cc:5:7: warning: 'a' is used uninitialized in this function [-Wuninitialized]
    5 |  scanf("%d,%d",a,b);
      |  ~~~~~^~~~~~~~~~~~~
foo.cc:5:7: warning: 'b' is used uninitialized in this function [-Wuninitialized]

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