Dereferencing pointer to incomplete type on a linked list
Hi, I'm pretty new at programming and I'm getting into linked lists. As part of a word database type thing I'm writing a function searchWord that calls a function named searchNodeWord . searchNodeWord runs through a singly linked list and assigns the value of the correct node (based on a parameter called strKey) to a parameter called pResult. searchWord should then print one of the strings in the node stored in pResult.
I't works fine until I try to printf the string in the pResult in [i]searchWord[\i]. I can use printf while I'm still in searchNodeWord just to see that I got the right node, but I can't seem to use it outside of the function. The compiler gives me a "Dereferencing pointer to incomplete type" error at that point.
Here's the relevant code:
Code:
void searchNodeWord(sWordType *pFirst, string50 strKey, sWordType **pResult)
{
printf("\n");
sWordType *pRun = NULL; //sWordType is the typedef i use for my nodes
pRun = pFirst;
char cChoice = '0';
int nLoop = 1;
do
{
if( pRun && strcmpi(pRun->strWord, strKey) == 0 )
{
printf("Match Found: \n");
printf("Entry: %s\n", pRun->strWord);
printf("Translation: %s\n", pRun->strTrans);
printf("\nIs this the correct entry? (Y/N)");
fflush(stdin);
scanf("%c", &cChoice);
if( cChoice == 'N' || cChoice == 'n' )
{
pRun = pRun->pNext;
}
else if ( cChoice == 'Y' || cChoice == 'y' )
{
*pResult = pRun;
printf("-->%s\n", (*pResult)->strWord); //This works fine
nLoop = 0;
/*
printf("\n");
displayDetails(pRun);
*/
}
//some other irrelevant code follows
}
Code:
void searchWord(sWordType *pFirst) //pFirst points to the head of a singly linked list
{
string50 strKey; //typedef char string50[51]
sWordType *pResult = NULL; //sWordType is the typedef i use for my nodes
printf("----|SEARCH WORD|----\n");
printf("Current lexicon entires:\n");
displayList(pFirst); //Lists all available entries in linked list
printf("\n");
printf("Enter word to search: ");
fflush(stdin);
scanf("%s", &strKey);
searchNodeWord(pFirst, strKey, &pResult); //pResult should be updated to proper address
//ERROR OCCURS AT NEXT LINE
printf("-->%s\n", pResult->strWord);
printf("\n");
}
Can anyone tell me why I cant seem to use that address fromm outside of searchNodeWord?
Thanks in advance. :)
