View Compilation Error

0_0_39042790_3854.cpp: In function 'int main()':
0_0_39042790_3854.cpp:6:11: error: 'memset' was not declared in this scope
    6 |           memset(hash,0,sizeof(hash));
      |           ^~~~~~
0_0_39042790_3854.cpp:2:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 | int hash[1000001];