What is a terminal zero?

Question

I need to know what a terminal zero is...
Whenever I run a search, I just get something about hacker software, which isn't nessecary.

Answer 1

do you mean terminating zero? if so, then it has to do with strings. It is used to mark the end of a string. example, in the string
char string[] = "hello";
string[0] would be h
string[1] would be e
string[2] would be l
string[3] would be l
string[4] would be o
string[5] would be 0 (zero)
when you use string functions, they look for the end of string by looking for that zero. if its not there, then it doesnt know where the end is.