about the strcpy,strlen functions in cpp

Could you please tell me how to write the functions of strcopy,string length,string append,string delete without using strlen,strcpy() functions?

 

Send ur coding........
I will correct the errors....

Tips to solve ur problem is "In the input character array ,count the no.of characters one by one, copy it character by character........"

 

You can't delete a string unless it's dynamically allocated, you can only make it empty.