Thread: complete the gaps

the function is supposed to construct a linked list out of
the inputed word

i completed as far as i could.

why i need temp and temp2
??

Code:

#include <stdio.h>	
#include <stdlib.h>
#include <string.h>

typedef struct wordStruct{
	char string[256];
	struct wordStruct *next;
} wordStruct;

wordStruct * wordAlloc(char *str){
	wordStruct *temp;
	temp = (wordStruct *)malloc(sizeof(wordStruct));
	temp->next=NULL;
	strcpy(temp->string,str);
	return temp;
} 

wordStruct *insert( wordStruct *head, char *st){
	wordStruct* temp, *temp2;
	
	if(head == NULL) return wordAlloc(st);
	
	if(?? 6 ??|| (?? 7 ?? && ?? 8 ??)){
		temp = ?? 9 ??;
		?? 10 ??;
		return temp;
	}
	
	for(temp=head; temp->next ; temp = temp -> next){
		if(?? 11 ??)break;
		if( ?? 12 ??&& ?? 13 ??)break;
	}	
	
	temp2 = temp->next;
	?? 14 ??;
	?? 15 ??;
	return head;	
}

void main(){	
	char word[256];
	wordStruct *list = NULL;
	
	while(scanf("%s", word)==1)
		list = insert(list, word);				
	. . . .	
}