View Compilation Error

0_0_38596635_29557.cpp: In function 'int main()':
0_0_38596635_29557.cpp:55:3: error: 'memset' was not declared in this scope
   memset (link, -1, sizeof (link)) ;
   ^~~~~~
0_0_38596635_29557.cpp:55:3: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
0_0_38596635_29557.cpp:5:1:
+#include <cstring>
 
0_0_38596635_29557.cpp:55:3:
   memset (link, -1, sizeof (link)) ;
   ^~~~~~