file query

[rahulsk1947]

Hey ,I was trying to design a code to handle file.It consists of character nodes.Line nodes that include character nodes. and a file that includes line node .

I wrote this code below,but it won't work.Wonder if some-one can help spot the error.

typedef struct CharacterNode {
	struct CharacterNode *nextCharacterNode;
	char data;
}characterNode;

typedef struct LineNode {
	struct CharacterNode *characterNode;
	struct LineNode *nextLineNode;
}lineNode;

typedef struct fileADT {
	struct LineNode *lineNode;
	int size;
}FileADT;


void initFileADT(FileADT *file) {
	
    file->lineNode = NULL;
    file->size=0;
}


int main(int argc, char *argv[]) {

	FileADT *a;
	a=NULL;
	initFileADT(a);
	
	
    return EXIT_SUCCESS;
}

thanx ppl

[SlyMaelstrom]

You have to allocate memory for the pointer. By the time you're initializing the variables, it's just a NULL pointer. If you don't know how, look into malloc().