foo.cc: In function 'int main()':
foo.cc:13:10: error: expected '}' at end of input
  return 0;
          ^
foo.cc:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d,%d",&a,&b); 
  ~~~~~^~~~~~~~~~~~~~~

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