View Compilation Error

0_0_39490091_15629.cpp: In function 'int main()':
0_0_39490091_15629.cpp:14:29: error: 'strlen' was not declared in this scope
   14 |                 int len_a = strlen(a);
      |                             ^~~~~~
0_0_39490091_15629.cpp:7:1: note: 'strlen' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    6 | #include <iostream>
  +++ |+#include <cstring>
    7 | #include <string>