C :: Make A String Out Of Part Of A String

I have a string that contains a various number of lines which are each separated by and so what I want to do is to put each line into a node in a linked list.The relevant sections in my code are as follows:

Code:

typedef struct line *Line;
struct line {
char *text;
int lineNum;
Line next;
}

[code]....

Code:

strncpy(curr->text, text[prevPos], subLength);

With this line, I was hoping to make curr->text a string that is length subLength and begins at position prevPos in the text string. Except text[prevPos] is treated as a single character and not a string that begins at that position.