foo.cc: In function 'int main()':
foo.cc:6:17: warning: format '%a' expects argument of type 'float*', but argument 2 has type 'int*' [-Wformat=]
    6 |         scanf("%a,%b",&a,&b);
      |                ~^     ~~
      |                 |     |
      |                 |     int*
      |                 float*
      |                %d

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