foo.cc: In function 'int main(int, char**)':
foo.cc:46:21: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'char*' [-Wformat=]
   46 |             scanf("%d",&data[j][i]);
      |                    ~^  ~~~~~~~~~~~
      |                     |  |
      |                     |  char*
      |                     int*
      |                    %hhd

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