foo.cc: In function 'int main()':
foo.cc:6:18: warning: 'a' is used uninitialized [-Wuninitialized]
    6 |         cout<<a<<"        "<<b<<"        "<<c<<endl;
      |                  ^~~~~~~~~~
foo.cc:6:33: warning: 'b' is used uninitialized [-Wuninitialized]
    6 |         cout<<a<<"        "<<b<<"        "<<c<<endl;
      |                                 ^~~~~~~~~~
foo.cc:6:45: warning: 'c' is used uninitialized [-Wuninitialized]
    6 |         cout<<a<<"        "<<b<<"        "<<c<<endl;
      |                                             ^

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