View Compilation Error

0_0_38819861_30982.cpp: In function 'int main()':
0_0_38819861_30982.cpp:17:14: error: 'strcmp' was not declared in this scope
   17 |          if(!strcmp(letters,"end"))
      |              ^~~~~~
0_0_38819861_30982.cpp:2:1: note: 'strcmp' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 |  #include "iostream"
  +++ |+#include <cstring>
    2 | 
0_0_38819861_30982.cpp:19:14: error: 'strlen' was not declared in this scope
   19 |          len=strlen(letters);
      |              ^~~~~~
0_0_38819861_30982.cpp:19:14: note: 'strlen' is defined in header '<cstring>'; did you forget to '#include <cstring>'?