foo.cc: In function 'int main()':
foo.cc:8:5: error: 'gets_s' was not declared in this scope; did you mean 'gets'?
    8 |     gets_s(arr1);
      |     ^~~~~~
      |     gets
foo.cc:9:13: error: 'strlen' was not declared in this scope
    9 |     int x = strlen(arr1);
      |             ^~~~~~
foo.cc:4:1: note: 'strlen' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    3 | #include<string>
  +++ |+#include <cstring>
    4 | //A8-1

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