1. Use CSTRING's GetBuffer function to return a head pointer that stores characters, use CHAR * to accept it, and then use subscript operation.

2. For example: char * ptr = str. get buffer()；

Define an array to accept each character.

Cahr array [10] = "0";

char array[0]= ptr[0]；

char array[ 1]= ptr[ 1]；

You can also use a loop so that the array holds the characters in CSTRING.