View Compilation Error

0_0_38839374_1291.cpp: In function 'int main()':
0_0_38839374_1291.cpp:14:25: error: 'memset' was not declared in this scope
   14 |                         memset(a1, 0, sizeof(a1));
      |                         ^~~~~~
0_0_38839374_1291.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include<algorithm>
  +++ |+#include <cstring>
    3 | using namespace std;
0_0_38839374_1291.cpp:18:36: error: 'strlen' was not declared in this scope
   18 |                         int len1 = strlen(a);
      |                                    ^~~~~~
0_0_38839374_1291.cpp:18:36: note: 'strlen' is defined in header '<cstring>'; did you forget to '#include <cstring>'?