Char * (pointer) function

Question

I need to pass in a char * in a function and have it set to a cstring value. I can properly set it as a string in the function, but it doesn\'t seem to print out correctly i

Answer 1

You have to pass a pointer to a pointer.

int l2_read(char **chunk,int length)
{
    *chunk = malloc( sizeof(char) * length);

     int i;
     for(i = 0; i < length; i++)
     {
         char c;
         if (read(&c) < 0) return (-1);
         (*chunk)[i] = c;
     }

     printf("%s",*chunk);
     return 1;

}

    char *string;
    int value = l2_read(&string,16);
    printf("%s",string);