foo.cc: In function 'int main()':
foo.cc:8:8: warning: 'b' is used uninitialized in this function [-Wuninitialized]
    8 |  a=(n-b*10-c)/100;
      |       ~^~~
foo.cc:8:11: warning: 'c' is used uninitialized in this function [-Wuninitialized]
    8 |  a=(n-b*10-c)/100;
      |    ~~~~~~~^~~

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