View Compilation Error

0_0_39890764_14469.cpp: In function 'int main()':
0_0_39890764_14469.cpp:18:27: error: 'strlen' was not declared in this scope
   18 |                 for(i=0;i<strlen(input);i++)
      |                           ^~~~~~
0_0_39890764_14469.cpp:2:1: note: 'strlen' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 | #include<string>