is that char null terminator is including in the length count

Question

#include 

int main(int argc, char *argv[]) {
   char s[]=\"help\";
   printf(\"%d\",strlen(s));  
}

Why the above output is 4, isn

Answer 1

strlen: Returns the length of the given byte string not including null terminator;

char s[]="help";
strlen(s) should return 4.

sizeof: Returns the length of the given byte string, include null terminator;

char s[]="help";
sizeof(s) should return 5.