View Compilation Error

0_0_39076183_21025.cpp: In function 'int Manacher(char*)':
0_0_39076183_21025.cpp:16:13: error: 'strlen' was not declared in this scope
   16 |         n = strlen(OldStr);
      |             ^~~~~~
0_0_39076183_21025.cpp:2:1: note: 'strlen' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | using namespace std;