I\'m having problems with my code and Ive looked at it for days and can\'t under

Question

I'm having problems with my code and Ive looked at it for days and can't understand how to fix it. I think a fresh set of eyes will be able to tell me what I'm just not seeing. Thanks all!

header file:
#include <stdio.h>
#define my

typedef char KEY_TYPE;
typedef struct
{
KEY_TYPE key;
} DATA;

typedef struct nodeTag
{ DATA data;
struct nodeTag* link;
} NODE;


Main:
#include "my.h"
#include <stdio.h>

int main(int argc, char *argv[])
{
NODE* pList;
FILE* p;
pList = NULL; NODE* pPre = NULL; DATA item; int y;
p = fopen(argv[1],"r");
while(y = fscanf(p, "%c", &(item->key)) != EOF);
{
pList = insertNode(pList,pPre,item);
}
countVowels (NODE* pList);
countChars (NODE* pList);
return 0;
}

PRINTLIST FUNCTION:
#include "my.h"
#include <stdio.h>
void printList (NODE* pList)
{
NODE* pWalker;
pWalker = pList;
printf("The linked list is ");

while(pWalker)
{
printf("%3c", pWalker->data.key);
pWalker = pWalker->link;
}
printf(" ");
return;
}


this is the error i keep getting:
main.c:13: warning: assignment makes pointer from integer without a cast
(the pList=insertNode line)

Explanation / Answer

Hi i can find three errors in your codes.

1. DATA is a structure and to access it's member you need dot(.) operator not -> operator.
while(y = fscanf(p, "%c", &(item->key)) != EOF);

wrtie while(y = fscanf(p, "%c", &(item.key)) != EOF);

2. Your while loop is ending on the same line so check it

while(y = fscanf(p, "%c", &(item->key)) != EOF);--------- you have put ; at the end of the line

3. pList = insertNode(pList,pPre,item); -------- as you have not given the code of the function insertNode()

But still check the return type of that function. As you have written pList = insertNode() so the return type of the function should not be void. If your function does not return any value then remove "pList=" from the line no 13.

All the best for your project !!!

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