foo.cc: In function 'int Index(char*, int, char*)':
foo.cc:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
   13 |         while (i <= strlen(S) && j <= strlen(T))
      |                ~~^~~~~~~~~~~~
foo.cc:13:36: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
   13 |         while (i <= strlen(S) && j <= strlen(T))
      |                                  ~~^~~~~~~~~~~~
foo.cc:26:15: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
   26 |         if (j > strlen(T))
      |             ~~^~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:34:16: warning: 'a' is used uninitialized [-Wuninitialized]
   34 |         cin >> a;
      |                ^
foo.cc:36:16: warning: 'b' is used uninitialized [-Wuninitialized]
   36 |         cin >> b;
      |                ^

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