View Compilation Error

0_0_39371471_22860.cpp: In function 'int main()':
0_0_39371471_22860.cpp:13:25: error: 'strlen' was not declared in this scope
   13 |                 int len=strlen(str);
      |                         ^~~~~~
0_0_39371471_22860.cpp:3:1: note: 'strlen' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include<stdlib.h>
  +++ |+#include <cstring>
    3 | using namespace std;