Thread: Searching a keyword...

Im kinda atlost with programming with this: gven a keyword,it will search for any instances of it in a string of Questions until the questions are null,if it finds an instance of it ,it will display the question..pls note that a string of question are seperated by spaces per word...Below are my declarations i just cant figure out how cld do the code....(by the way,am usin linked list on this)
typedef char str20[21];
typedef char str70[71];

typedef struct
{
str70 strQuestions;
str20 strChoices[4];
char cAns;
int nLevel;
}struct_Game;
struct structNode
{
struct_Game sGame;
struct structNode *pGPrev,*pGNext;
};
typedef struct structNode structGNodeType;
typedef structGNodeType *ptrGNode;

ive tried doing it but it still wont work..the code is as follows below......

Code:

int find(ptrGNode pGame)
{ ptrGNode pTemp;
	int nCtr,i,j,k,l,m,nVal;
	str70 strTemp;

	char sKey[31];
	int nFound=0,nWhere;
	nCtr =0;
		do{printf("\n\n Enter Keyword:>");
	scanf("%s",sKey);
	
	if(strlen(sKey)>31)
	
	printf("Keyword must only be 30 characters or less");
		
	}while(strlen(sKey)>31);
	 if(sKey[0]=='\0')
		return(NOT_FOUND);
	else	
	{pTemp=pGame;

	
	while(pTemp!=NULL)
	{	
		j=0;
	for(i=0;i<strlen(pTemp->sGame.strQuestions);i++)
	{
	while(pTemp->sGame.strQuestions[i]!='\0')
	{
	strTemp[j]=pTemp->sGame.strQuestions[i];
	j++;
	}			
		strTemp[j]='\0';

	if(!strcmp(strTemp,sKey))
	{
	nFound=1;
	return(nCtr);	
	}	
	else
	nCtr++;
	pTemp=pTemp->pGNext;
	}
	}			
}			
          	if(nFound==1)
		nWhere=nCtr;
		else
		nWhere=NOT_FOUND;

return(nWhere);	
}
	         	
			
	


/*Function: view_Keyword						*
 * Purpose: this function displays the question matching the keyword	*
 * Note: Calls the function int find()					*/

void view_Keyword(ptrGNode pGame,struct_Game sGame)
{ptrGNode pTemp;
		int nNum,nChoice;
		
		pTemp=pGame;
		do			
		{printf("\n ~ ~ ~ ~ ~ VIEW KEYWORD ~ ~ ~ ~ ~ \n");
		nNum = find(pGame);
		if( nNum==-1)
		
		printf("not found!");
		else
		
		display_Question(pTemp->sGame);
		printf(" Would you like to look up another(1-yes/0-no)?");
		scanf("%d",&nChoice);
		
		if(nChoice==1)
		view_Keyword(pGame,sGame);
		else if(nChoice==0)
		view_Question(pGame,sGame);
		else
		puts(ERROR);
		}while(nChoice==1);
	
	

}

Originally posted by swoopy
Use strstr().

>if(!strcmp(strTemp,sKey))
Change this to:
if(strstr(strTemp,sKey) != NULL)

ive tried that too..but still its not workin...hmmm.what couldve possibly be wrong???
do have any other alternative algo in mind??

i tried that thing too both --takin out the while then the for..but still it doesnt work.....?????HEEELLPPPP!

also,whenever i enter lets say ( the dog)..it prints out a series of not_found messages!---whereas it i only type 1 word like dog it jsut prints out 1 not found msg...?????

i tried making a code diff.from the last one i posted....do you think this one's better?

Code:

void viewkey(ptrGNode pGame,structGame sGame)//searches the list of questions 
{	ptrGNode pRun;
	string70 skeyword;
	int nx=0,ny=0,nz=0,nCount2=0,j=0;
	char cflag='a';
	printf("\nEnter keyword:");
	scanf("%s",skeyword);
	nCount=0;
	pRun=pGame;
	if(nCount1!=0)
	{
	while(skeyword[nx]!='\0')
	{	skeyword[nx]=tolower(skeyword[nx]);
		nx++;
		nz++;
	}
	nx=0;
	nCount2=0;
	while(nCount2<nCount1)
	{	
		nx=0;
		ny=0;

		while(pRun!=NULL &&skeyword[nx]!='\0')
		{	pRun=pRun->pGNext;
		if(skeyword[nx]==(tolower(pRun->sGame.strQuestions[ny])))
				nx++;
			else
				nx=0;
			ny++;
			
		if(nx==nz)
		{		
				printf("\nQuestion #%d ",nCount2+1);
			display_Question(pRun->sGame);
			puts(pRun->sGame.strQuestion);
			for(j=0;j<4;j++)
				{	if(cflag=='e')
						cflag='a';
					printf("%c. ",cflag);
					puts(pRun->sGame.strChoices[j]);
					cflag++;
				}
				printf("correct answer:  %c",pRun->sGame.cAns);
				printf("\ndificulty level: %d\n",pRun->sGame.nLevel);
				nCount++;
		}
		if(nCount==3)
		{	counter();
			nCount=0;			}
		}
		nCount2++;
		}
	}
	else if(nx!=ny && (nCount1==0 ||nCount2==nCount1))
		printf("\nNo matches found.\n");
}