1. Perform the following exercises under lab3 sub directory. 2. Here is strlen() function which returns the length of a null-terminated character-array unsigned int strlen (const char s[]) unsigned int n; for (n = 0; s[n]; return n; n++); // same as s[n] != 'Ve. Here is the same function using pointers: unsigned int strlen(const char* s) unsigned int n; for (n = 0; .(s+n); return n; n++); Write your own main() to test the correctness of both versions of this function