View Compilation Error

0_0_39367912_7764.cpp: In function 'void caculate()':
0_0_39367912_7764.cpp:6:9: error: 'memset' was not declared in this scope
    6 |         memset(d, 0, sizeof(d));
      |         ^~~~~~
0_0_39367912_7764.cpp:2:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | using namespace std;