std::string.c_str() c++ code example
Example: c c_str
Get C string equivalent
TL;DR -> Makes the string end with '\0'
Returns a pointer to an array that contains a null-terminated sequence of
characters (i.e., a C-string) representing the current value of the string
object.
This array includes the same sequence of characters that make up the value of
the string object plus an additional terminating null-character ('\0') at the
end.